List of elected British politicians who have changed party affiliation

This is a list of members of the House of Commons of the United Kingdom, the House of Lords, British members of the European Parliament, members of the British devolved legislatures (such as the Scottish Parliament, Senedd, and Northern Ireland Assembly) and Police and Crime Commissioners (PCCs) who have changed their party affiliation (i.e. abandoning a previous party membership to take up a new one) or who have resigned from, been suspended from or been expelled from their previous party affiliation, making them independents. When a member of a legislature switches from one party to another, this is called crossing the floor. The list details the dates, members involved, previous and new party affiliations, and an explanation for their switch.

Members of Parliament who have changed party affiliation

Date	Member	Before		After		Notes
MPs 1680–1832
1698	John Grubham Howe		Whig		Tory
1707	Sir Robert Harley		Whig		Tory
1725	John Montagu, Viscount Hinchingbrooke		Whig		Tory
	Sir William Pulteney		Whig		Tory
1793	William Windham		Whig		Independent
1795	Robert Stewart, Viscount Castlereagh		Whig		Tory
	Thomas Pelham		Whig		Tory
1810	Charles Williams-Wynn		Whig		Tory	Tried to create a third political party, failed and joined the Tories.
1822	Henry John Temple, 3rd Viscount Palmerston		Tory		Whig
1828	Charles Williams-Wynn		Tory		Whig	Was not offered a position in Government.
1834			Whig		Tory	Offered position in Government.
1832–1847 Parliaments
1834	Sir James Graham, 2nd Baronet		Whig		Conservative	Resigned as First Lord of the Admiralty
	Lord Stanley		Whig		Conservative	Resigned as Secretary of State for War and the Colonies
	Lord George Bentinck		Whig		Conservative
	Bingham Baring		Whig		Conservative
1846	William Ewart Gladstone		Conservative		Peelite	Resigned as Secretary of State for War and the Colonies
	Henry Goulburn		Conservative		Peelite	Resigned as Chancellor of the Exchequer
	Sir James Graham, 2nd Baronet		Conservative		Peelite	Resigned as Home Secretary
	Sidney Herbert		Conservative		Peelite	Resigned as Secretary at War
	John Young		Conservative		Peelite	Resigned as Parliamentary Secretary to the Treasury
	Edward Cardwell		Conservative		Peelite	Resigned as Financial Secretary to the Treasury
1847–1886 Parliaments
1847	Sir John Young, 2nd Baronet		Conservative		Peelite
	Lord Ernest Bruce		Conservative		Peelite
	Henry Bingham Baring		Conservative		Peelite
1852	Frederick Peel		Conservative		Peelite
	Henry FitzRoy		Conservative		Peelite
	James Stuart-Wortley		Conservative		Peelite
1853	Lord Alfred Hervey		Conservative		Peelite
	Sir John Young, 2nd Baronet		Peelite		Conservative
1859	William Ewart Gladstone		Peelite		Liberal
	Frederick Peel		Peelite		Liberal
1868	Edward James Saunderson		Liberal		Conservative
1879	James Yeaman		Liberal		Conservative
1886–1900 Parliaments
1886	Joseph Chamberlain		Liberal		Liberal Unionist	Created the Liberal Unionist Party after disagreeing with William Gladstone and splitting over Home Rule for Ireland Was the President of the Board of Trade until his defection.
	Sir Henry James		Liberal		Liberal Unionist	Was the Attorney-General until his defection.
	Edward Heneage		Liberal		Liberal Unionist	Was the Chancellor of the Duchy of Lancaster until his defection.
	The Marquess of Hartington		Liberal		Liberal Unionist	Was the Secretary of State for War until his defection.
	Sir George Otto Trevelyan, 2nd Baronet		Liberal		Liberal Unionist	Was the Secretary for Scotland until his defection.
	William Shepherd Allen		Liberal		Liberal Unionist
	Arthur Peel		Liberal		Liberal Unionist
	John Boyd Kinnear		Liberal		Liberal Unionist
	William Shepherd Allen		Liberal		Liberal Unionist
	Walter Morrison		Liberal		Liberal Unionist
	Arthur Pease		Liberal		Liberal Unionist
	Arthur Pease		Liberal		Liberal Unionist
	Henry Vivian		Liberal		Liberal Unionist
	John Corbett		Liberal		Liberal Unionist
	William Cornwallis-West		Liberal		Liberal Unionist
	William Crossman		Liberal		Liberal Unionist
	John Westlake		Liberal		Liberal Unionist
	Henry Brand		Liberal		Liberal Unionist
	Donald Currie		Liberal		Liberal Unionist
	George Dixon		Liberal		Liberal Unionist
	Sir Cuthbert Quilter, 1st Baronet		Liberal		Liberal Unionist
	John William Ramsden		Liberal		Liberal Unionist
	Charles Pelham Villiers		Liberal		Liberal Unionist
	Sir Robert Anstruther, 5th Baronet		Liberal		Liberal Unionist
	Sir George Macpherson-Grant, 3rd Baronet		Liberal		Liberal Unionist
	Ernest Noel		Liberal		Liberal Unionist
	Alexander Craig Sellar		Liberal		Liberal Unionist
	John Wilson		Liberal		Liberal Unionist
	David Davies		Liberal		Liberal Unionist
	Robert Bickersteth		Liberal		Liberal Unionist
	Edward Watkin		Liberal		Liberal Unionist
	Viscount Lymington		Liberal		Liberal Unionist
	Viscount Wolmer		Liberal		Liberal Unionist
	Viscount Ebrington		Liberal		Liberal Unionist
	Viscount Howick		Liberal		Liberal Unionist
	Viscount Baring		Liberal		Liberal Unionist
	Viscount Lambton		Liberal		Liberal Unionist
	Lord Richard Grosvenor		Liberal		Liberal Unionist
	Lord Edward Cavendish		Liberal		Liberal Unionist
	Sir Thomas Grove, 1st Baronet		Liberal		Liberal Unionist
	Sir Robert Jardine, 1st Baronet		Liberal		Liberal Unionist
	Sir Savile Brinton Crossley, 2nd Baronet		Liberal		Liberal Unionist
	Sir John St Aubyn, 2nd Baronet		Liberal		Liberal Unionist
	Hugh Elliot		Liberal		Liberal Unionist
	Arthur Elliot		Liberal		Liberal Unionist
	Andrew Fairbairn		Liberal		Liberal Unionist
	Sir Charles Seely, 1st Baronet		Liberal		Liberal Unionist
	Sir Alexander Brown, 1st Baronet		Liberal		Liberal Unionist
	Savile Crossley		Liberal		Liberal Unionist
	Sir Henry Wiggin, 1st Baronet		Liberal		Liberal Unionist
	John Lubbock		Liberal		Liberal Unionist
	Francis Taylor		Liberal		Liberal Unionist
	Richard Frederick Fotheringham Campbell		Liberal		Liberal Unionist
	John Wentworth-FitzWilliam		Liberal		Liberal Unionist
	Archibald Corbett		Liberal		Liberal Unionist
	Jesse Collings		Liberal		Liberal Unionist
	Thomas Buchanan		Liberal		Liberal Unionist
	George Dixon		Liberal		Liberal Unionist
	Thomas Sutherland		Liberal		Liberal Unionist
	Charles James Monk		Liberal		Liberal Unionist
	William Kenrick		Liberal		Liberal Unionist
	Robert Jasper More		Liberal		Liberal Unionist
	Cathcart Wason		Liberal		Liberal Unionist
	Lewis Fry		Liberal		Liberal Unionist
John Corbett		Liberal		Liberal Unionist
Mitchell Henry		Liberal		Liberal Unionist
Richard Biddulph Martin		Liberal		Liberal Unionist
Sir John Pender		Liberal		Liberal Unionist
Henry Meysey-Thompson		Liberal		Liberal Unionist
George Pitt-Lewis		Liberal		Liberal Unionist
Alfred Barnes		Liberal		Liberal Unionist
Lewis McIver		Liberal		Liberal Unionist
Richard Chamberlain		Liberal		Liberal Unionist
George Salis-Schwabe		Liberal		Liberal Unionist
Francis William Maclean		Liberal		Liberal Unionist
Francis Bingham Mildmay		Liberal		Liberal Unionist
Hamar Alfred Bass		Liberal		Liberal Unionist
Henry Hobhouse		Liberal		Liberal Unionist
William Pirrie Sinclair		Liberal		Liberal Unionist
John Jenkins		Liberal		Liberal Unionist
Robert Finlay		Liberal		Liberal Unionist
William Bickford-Smith		Liberal		Liberal Unionist
Robert Thornhagh Gurdon		Liberal		Liberal Unionist
Charles Fraser-Mackintosh		Liberal		Liberal Unionist
Lewis Fry		Liberal		Liberal Unionist
George Hastings		Liberal		Liberal Unionist
Henry Howard		Liberal		Liberal Unionist
Joseph Powell-Williams		Liberal		Liberal Unionist
Thomas Richardson		Liberal		Liberal Unionist
Sir Julian Goldsmid, 3rd Baronet		Liberal		Liberal Unionist
Peter Rylands		Liberal		Liberal Unionist
John Bright		Liberal		Liberal Unionist
William Kenrick		Liberal		Liberal Unionist
Jesse Collings		Liberal		Liberal Unionist
James William Barclay		Liberal		Liberal Unionist
Frederick William Grafton		Liberal		Liberal Unionist
Alfred Barnes		Liberal		Liberal Unionist
Michael Biddulph		Liberal		Liberal Unionist
Nevil Story Maskelyne		Liberal		Liberal Unionist
Edmond Wodehouse		Liberal		Liberal Unionist
William Sproston Caine		Liberal		Liberal Unionist
Henry Frederick Beaumont		Liberal		Liberal Unionist
Greville Richard Vernon		Liberal		Liberal Unionist
1888	Henry Wentworth-FitzWilliam		Liberal		Liberal Unionist
	Cunninghame Graham		Liberal		Independent
	Thomas Buchanan		Liberal Unionist		Liberal
	Sir Thomas Grove, 1st Baronet		Liberal Unionist		Liberal
1891	All Irish Conservative MPs		Irish Conservative		Irish Unionist	Conservatives in Ireland merged into new party.
1892	Benjamin Hingley		Liberal Unionist		Liberal
1893	George Joachim Goschen		Liberal Unionist		Conservative
	Thomas Henry Bolton		Liberal		Liberal Unionist
	William Grenfell		Liberal		Conservative
1898	George Doughty		Liberal		Liberal Unionist
1899	Leonard Courtney		Liberal Unionist		Liberal
1900	George Whiteley		Conservative		Liberal	Stood for Pudsey as Liberal in the 1900 election after standing down as Conservative MP for Stockport.
1900–1906 Parliament
1902	Cathcart Wason		Liberal Unionist		Liberal	Resigned seat and fought by-election as an Independent Liberal
1903	Michael Foster		Liberal Unionist		Liberal
	John William Wilson		Liberal Unionist		Liberal
31 May 1904	Winston Churchill		Conservative		Liberal	Changed party over dismay at the Conservative party becoming more "protectionist" Returned to Conservatives in the 1920s, stating "Anyone can rat, but it takes a certain amount of ingenuity to re-rat".
1904	John Eustace Jameson		Irish Parliamentary		Conservative
	Jack Seely		Conservative		Ind. Conservative
	Ivor Guest		Conservative		Liberal
	Ernest Hatch		Conservative		Liberal
	George Kemp		Liberal Unionist		Liberal
	Lord Richard Cavendish		Liberal Unionist		Liberal
	Edward Hain		Liberal Unionist		Liberal
	Richard Bell		Labour		Liberal
November 1904	Richard Rigg		Liberal		Conservative	Joined Conservatives because "he found himself in agreement with the Conservative government on so many key issues"
1905	John Dickson-Poynder		Conservative		Liberal
1906	John Eldon Gorst		Conservative		Free Trader
	Jack Seely		Ind. Conservative		Liberal
1906–December 1910 Parliaments
1906	Carlyon Bellairs		Liberal		Liberal Unionist
	Austin Taylor		Conservative		Liberal
	John William Wilson		Liberal Unionist		Liberal
1907	Leslie Renton		Liberal		Liberal Unionist
1908	Archibald Corbett		Liberal Unionist		Liberal	Re-joined Liberal Party
1909	Alexander Cross		Liberal Unionist		Liberal
	Arthur Elliot		Liberal Unionist		Independent	Stood as an independent
	Thomas Kincaid-Smith		Liberal		Independent	Stood as an independent
	Enoch Edwards		Liberal		Labour
	Frederick Hall		Liberal		Labour
	William Johnson		Liberal		Labour
1910	William Abraham		Liberal		Labour
	William Edwin Harvey		Liberal		Labour
	James Haslam		Liberal		Labour
	Thomas Richards		Liberal		Labour
	Albert Stanley		Liberal		Labour
	John Wadsworth		Liberal		Labour
	John Williams		Liberal		Labour
	Harold Cox		Liberal		Free Trader
December 1910–1918 Parliament
May 1912	35 MPs		Liberal Unionist		Conservative	Conservative and Liberal Unionist parties merged.
	John Gordon		Liberal Unionist		Irish Unionist	Irish Liberal Unionist and Unionist parties merged.
30 March 1914	William Edwin Harvey		Labour		Liberal	Resigned over the party's treatment of Barnet Kenyon, before and after the 1913 Chesterfield by-election, particularly regarding miner's representation.
1914	William Johnson		Labour		Liberal	Expelled from the Labour Party for addressing Liberal Party meetings.
1915	John Hancock		Labour		Liberal	Expelled from the Labour Party.
	John Wadsworth		Labour		Liberal
	William Abraham		Labour		Liberal
1917	Sir Richard Cooper, 2nd Baronet		Conservative		Independent	Those who defected in 1917 actually joined the National Party. However, before the general election of 1918 all members apart from Croft and Cooper had returned to the Conservatives or had lost their seats.
	Henry Page Croft		Conservative		Independent
	Richard Hamilton Rawson		Conservative		Independent
	Alan Hughes Burgoyne		Conservative		Independent
	Douglas George Carnegie		Conservative		Independent
	Viscount Duncannon		Conservative		Independent
	Rowland Hunt		Conservative		Independent
	Edward Fitzroy		Conservative		Independent
1918	Harland Bowden		Conservative		Ind. Unionist
	Arthur Strauss		Conservative		Independent Labour
	Charles Trevelyan		Liberal		Independent Labour
	Arthur Ponsonby		Liberal		Independent	Contested as an Independent Democrat.
	R. L. Outhwaite		Liberal		Independent Liberal
	Leo Chiozza Money		Liberal		Labour
	Edward John		Liberal		Labour
1918–1922 Parliament
1918–1922	Many		Independent		Independent	During this Parliament it is difficult to track moves by many MPs between the pro- and anti-Coalition wings of their parties.
1918	George Nicoll Barnes		Labour		Independent Labour	Refused to resign from the Lloyd George Coalition
1919	Cecil L'Estrange Malone		Liberal		Independent
1920	Oswald Mosley		Conservative		Independent	Left over the Conservative Party's Irish policy, specifically the use of Black and Tans.
1921	All Irish Unionist MPs		Irish Unionist		Ulster Unionist	Creation of Northern Ireland after partition of Ireland.
	Thomas Harbison		Irish Parliamentary		Nationalist
1922	John Hope		Liberal		Independent Liberal	Rejected as a candidate on the grounds that he had not made a single speech during his 24 years in Parliament.
	T. P. O'Connor		Irish Parliamentary		Irish Nationalist	Irish Parliamentary Party no longer represented in Parliament. It dissolved after the Irish Free State's establishment.
1922–1923 Parliament
1923	Gordon Ralph Hall Caine		Independent		Conservative	Took the Conservative whip
	James Malcolm Monteith Erskine		Independent		Conservative
1923–1924 Parliament
February 1924	George M. Ll. Davies		Independent		Labour	Originally elected as an "Independent Christian Pacifist"; later took the Labour whip but did not join the party
1924–1929 Parliament
1924	Oswald Mosley		Independent		Labour
January 1926	Sir Alfred Mond, Bt		Liberal		Conservative	Defected after falling out with Lloyd George
1926	Joseph Kenworthy		Liberal		Labour	Resigned in opposition of Lloyd George's leadership
1927	George Alfred Spencer		Labour		Independent	Expelled from the Labour party for brokering a local settlement during the General Strike.
	Leslie Haden-Guest		Labour		Independent	Resigned in protest of Labour's opposition of sending troops to Shanghai
	Sir Robert Newman, Bt		Conservative		Independent	Whip withdrawn after a dispute between Newman and his local Conservative association, leading to his deselection as a Conservative parliamentary candidate, as well as differences with the party leadership surrounding his support for free-trade policies.
1928	Sir Basil Peto, Bt		Conservative		Independent	Whip withdrawn in April 1928 due to policy disagreements with Stanley Baldwin's Conservative government.
			Independent		Conservative	Whip restored in November 1928 after an overwhelming vote of confidence in Peto by his local party executive.
1929	Thomas Robinson		Liberal		Independent
1929–1931 Parliament
1931	Oswald Mosley		Labour		New Party	Created the New Party.
	Lady Cynthia Mosley		Labour		New Party	Joined the New Party.
	Oliver Baldwin		Labour		New Party	Joined the New Party but left after one day and sat as an independent.
			New Party		Independent
	Robert Forgan		Labour		New Party	Joined the New Party
	W. E. D. Allen		Ulster Unionist		New Party	Joined the New Party
	Cecil Dudgeon		Liberal		New Party	Joined the New Party
February 1931	John Strachey		Labour		New Party	Joined the New Party
June 1931			New Party		Independent	Did not agree with the party's drift towards fascism
24 August 1931	Ramsay MacDonald		Labour		National Labour	Formed the National Government
	Malcolm MacDonald		Labour		National Labour	Joined the National Government
25 August 1931	Philip Snowden		Labour		National Labour	Joined the National Government
	J. H. Thomas		Labour		National Labour
1931	William Jowitt		Labour		National Labour	Followed MacDonald on 28 August
	George Gillett		Labour		National Labour	Followed MacDonald on 31 August
	Ernest Bennett		Labour		National Labour	Followed MacDonald on 1 September
	George Knight		Labour		National Labour	Followed MacDonald on 2 September
	James Lovat-Fraser		Labour		National Labour	Followed MacDonald on 2 September
	Craigie Aitchison		Labour		National Labour	Followed MacDonald on 3 September
	Samuel Rosbotham		Labour		National Labour	Followed MacDonald on 5 September
	Archibald Church		Labour		National Labour	Followed MacDonald on 8 September.
	Richard Denman		Labour		National Labour	Followed MacDonald on 10 September.
	Sydney Frank Markham		Labour		National Labour	Followed MacDonald on 16 September.
	Derwent Hall Caine		Labour		National Labour	Followed MacDonald on 23 September.
1931–1935 Parliament
February 1933	Harry Nathan		Liberal		Independent Liberals (UK, 1931)	Opposed the policy of the National Government
November 1933	Robert Bernays		Liberal		Independent Liberal	Remained on the government benches when the Liberal Party went into opposition
	Joseph Leckie		Liberal		National Liberal
	William McKeag		Liberal		National Liberal
	Joseph Maclay		Liberal		Independent Liberal
August 1934	Harry Nathan		Independent Liberals (UK, 1931)		Labour
1935–1945 Parliament
July 1935	George Morrison		Liberal		National Liberal
1935	Katharine Stewart-Murray, Duchess of Atholl		Conservative		Independent	Resigned whip over the India Bill and the "national-socialist tendency" of the government's domestic policy.
			Independent		Conservative
1937			Conservative		Independent	Resigned whip over Anglo-Italian Agreement
			Independent		Conservative
1938			Conservative		Independent	Resigned a third time, due to opposing Neville Chamberlain's policy of appeasement of Adolf Hitler before being deselected by her local party
September 1936	Robert Bernays		Independent Liberal		National Liberal
1938	Herbert Holdsworth		Liberal		National Liberal
November 1939	Aneurin Bevan		Labour		Independent	Expelled from the Labour Party for seven months for supporting a "popular front"
	Sir Stafford Cripps		Labour		Independent
	George Strauss		Labour		Independent
	Clement Davies		National Liberal		Independent	Resigned whips of both the Liberal Nationals and the National Government in opposition to Chamberlain.
March 1940	Denis Pritt		Labour		Independent	Expelled from the Labour Party over his defence of the Soviet invasion of Finland
1942	Murdoch Macdonald		National Liberal		Independent
	Edgar Granville		National Liberal		Independent
	Clement Davies		Independent		Liberal	Returned to the Liberal Party after a decade.
February 1942	Stephen King-Hall		National Labour		Independent	Opposed the party's considerations in wartime
May 1942	Alec Cunningham-Reid		Conservative		Independent	Whip withdrawn after a dispute with the national Conservative leadership.
July 1942	Sir Richard Acland		Liberal		Common Wealth	Formed the Common Wealth Party after a merger of the 1941 Committee and the Forward March movement
	Vernon Bartlett		Independent Progressive		Common Wealth	Fought the 1945 general election as an independent
May 1943	Kenneth Lindsay		National Labour		Independent
November 1944	John Eric Loverseed		Common Wealth		Independent
February 1945	Sir Stafford Cripps		Independent		Labour	Rejoined the Labour Party
April 1945	Edgar Granville		Independent		Liberal
May 1945	John Eric Loverseed		Independent		Labour
1945–1950 Parliament
1945	John MacLeod		Independent Liberal		National Liberal
22 April 1946	Ernest Millington		Common Wealth		Labour
21 October 1946	Tom Horabin		Liberal		Independent	Declared support for the Labour government
26 March 1947	John McGovern		Ind. Labour Party		Labour
23 July 1947	Rev Campbell Stephen		Ind. Labour Party		Independent	Granted the Labour whip on 21 October 1947.
21 October 1947			Independent		Labour
29 October 1947	James Carmichael		Ind. Labour Party		Independent	Granted the Labour whip on 3 November 1947.
3 November 1947			Independent		Labour
4 November 1947	Evelyn Walkden		Labour		Independent	Following censure by the House for his conduct.
18 November 1947	Tom Horabin		Independent		Labour
22 March 1948	John Mackie		Independent		Conservative
28 April 1948	John Platts-Mills		Labour		Independent	Expelled from party for sending supportive telegram to Pietro Nenni, Italian socialist allied with the Communists.
16 May 1948	Alfred Edwards		Labour		Conservative	Expelled from party for opposition to nationalisation of steel.
3 October 1948	Eric Gandar Dower		Conservative		Independent	Dispute with local association.
26 October 1948	Ivor Thomas		Labour		Conservative	Resigned due to opposition to nationalisation of steel.
28 October 1948	Gwilym Lloyd George		Liberal		Independent	Whip removed; Lloyd-George had been sitting on the Conservative front bench since 1945 but had continued to receive the Liberal whip "as a matter of courtesy"
18 May 1949	Leslie Solley		Labour		Independent	Expelled from party for persistently opposing government policies.
	Konni Zilliacus		Labour		Independent
27 July 1949	Lester Hutchinson		Labour		Independent	Expelled from party for opposition to government foreign policy.
1950–1951 Parliament
4 May 1950	John MacLeod		Independent Liberal		National Liberal
4 August 1950	Raymond Blackburn		Labour		Independent	Called for Winston Churchill to be Prime Minister in a coalition government.
1951–1955 Parliament
2 June 1954	John Mellor		Conservative		Independent	Resigned whip over increase in MPs' salaries (Mellor was opposed).
14 July 1954			Independent		Conservative
	Harry Legge-Bourke		Conservative		Independent	Opposed to policy of withdrawing British base in Suez canal zone.
18 October 1954	Harry Legge-Bourke		Independent		Conservative
23 November 1954	S. O. Davies		Labour		Independent	Whip withdrawn after breaking the whip over German rearmament.
	George Craddock		Labour		Independent
	Ernest Fernyhough		Labour		Independent
	Emrys Hughes		Labour		Independent
	Sydney Silverman		Labour		Independent
	Victor Yates		Labour		Independent
	John McGovern		Labour		Independent
10 March 1955	Richard Acland		Labour		Independent	Opposed to party policy on nuclear arms and resigned his seat.
16 March 1955	Aneurin Bevan		Labour		Independent	Whip withdrawn for challenging the authority of Party leader.
April 1955	S. O. Davies		Independent		Labour	Whip restored.
	George Craddock		Independent		Labour
	Ernest Fernyhough		Independent		Labour
	Emrys Hughes		Independent		Labour
	Sydney Silverman		Independent		Labour
	Victor Yates		Independent		Labour
	John McGovern		Independent		Labour
28 April 1955	Aneurin Bevan		Independent		Labour
1955–1959 Parliament
8 November 1956	Cyril Banks		Conservative		Independent	Resigned whip over the Suez Crisis (Banks was friendly with Egypt). The whip was restored on 19 December 1958.
13 May 1957	Patrick Maitland		Conservative		Independent	Resigned whip over the Suez Crisis, wanting UK involvement in Suez to continue (whip restored 23 December 1957)
	John Biggs-Davison		Conservative		Independent	Resigned whip over the Suez Crisis, wanting UK involvement in Suez to continue (whip restored 11 July 1958)
	Anthony Fell		Conservative		Independent
	Victor Montagu		Conservative		Independent
	Lawrence Turner		Conservative		Independent
	Paul Williams		Conservative		Independent
	Angus Maude		Conservative		Independent	Resigned whip over the Suez Crisis, wanting UK involvement in Suez to continue and subsequently resigned their seat.
	Victor Raikes		Conservative		Independent
14 November 1957	Frank Medlicott		Conservative		Independent	Resigned whip over the Suez Crisis (Medlicott was opposed to the invasion). The whip was restored 21 November 1958.
30 January 1959	David Robertson		Conservative		Independent	Resigned whip over policy on the Scottish highlands.
1959–1964 Parliament
16 March 1961	William Baxter		Labour		Independent	Whip withdrawn for voting against the defence estimates. The whip was restored on 29 May 1963.
	S. O. Davies		Labour		Independent
	Michael Foot		Labour		Independent
	Emrys Hughes		Labour		Independent
	Sydney Silverman		Labour		Independent
22 March 1961	Alan Brown		Labour		Independent	Opposed to party defence policy.
	Konni Zilliacus		Labour		Independent	Whip suspended until January 1962 for writing critical article in Communist publication.
19 October 1961	William Duthie		Conservative		Independent	Resigned whip over policy on salmon fishing industry. The whip was restored on 15 November 1963.
4 May 1962	Alan Brown		Independent		Conservative
23 January 1964	Dr Donald Johnson		Conservative		Independent	Dispute with local party.
1966–1970 Parliament
10 July 1966	Geoffrey Hirst		Conservative		Ind. Conservative	Failed to persuade party to vote against Prices and Incomes Bill.
8 December 1966	Reginald Paget		Labour		Independent	Resigned the whip because of opposition to United Nations sanctions on Rhodesia. The whip was restored on 15 June 1967.
10 January 1968	Julian Ridsdale		National Liberal		Conservative	Party disbanded
	David Renton		National Liberal		Conservative
	Joan Vickers		National Liberal		Conservative
	John Nott		National Liberal		Conservative
18 January 1968	Desmond Donnelly		Labour		Independent	Opposed to defence cuts 'east of Suez'
31 January 1968	Frank Allaun		Labour		Independent Labour	whip suspended from 31 January 1968 to 29 February 1968.
	Norman Atkinson		Labour		Independent Labour
	Albert Booth		Labour		Independent Labour
	James Dickens		Labour		Independent Labour
	S. O. Davies		Labour		Independent Labour
	Michael Foot		Labour		Independent Labour
	Will Griffiths		Labour		Independent Labour
	Dr John Dunwoody		Labour		Independent Labour
	Eric Heffer		Labour		Independent Labour
	Willie Hamilton		Labour		Independent Labour
	Emrys Hughes		Labour		Independent Labour
	Peter Jackson		Labour		Independent Labour
	Anne Kerr		Labour		Independent Labour
	Russell Kerr		Labour		Independent Labour
	Malcolm Macmillan		Labour		Independent Labour
	John Mendelson		Labour		Independent Labour
	Stanley Newens		Labour		Independent Labour
	Christopher Norwood		Labour		Independent Labour
	Stan Orme		Labour		Independent Labour
	Trevor Park		Labour		Independent Labour
	John Ryan		Labour		Independent Labour
	Sydney Silverman		Labour		Independent Labour
	Tom Swain		Labour		Independent Labour
	Carol Johnson		Labour		Independent Labour
1970–1974 Parliament
24 August 1970	Gerry Fitt		Republican Labour		SDLP	Formed new party.
October 1970	Bernadette Devlin		Unity		Independent	Declared that she would sit in Parliament as an independent socialist
30 September 1971	Ian Paisley		Protestant Unionist		DUP	Protestant Unionists merged into new party.
16 February 1972	Ray Gunter		Labour		Independent Labour	Opposed to take-over of party by middle-class intellectuals.
6 October 1972	Dick Taverne		Labour		Democratic Labour	Dispute with local party. Simultaneously announced his intention to resign his seat and seek re-election.
18 December 1972	Stratton Mills		Ulster Unionist		Conservative	Chose to remain an "independent unionist and Conservative" when the UUP withdrew from the Conservative whip
29 April 1973			Conservative		Alliance
1974 Parliament
9 July 1974	Christopher Mayhew		Labour		Liberal	Believed Labour was too vulnerable to left takeover.
1974–1979 Parliament
11 October 1975	John Dunlop		Vanguard		UUUP	Split with leadership over proposal for voluntary power-sharing in Northern Ireland
24 October 1975	James Kilfedder		Ulster Unionist		Ind. Unionist	Opposed to the growth of support for the full integration of Northern Ireland into the United Kingdom, remained committed to devolution
19 November 1975	Robert Bradford		Vanguard		Ulster Unionist	Opposed to power-sharing.
7 April 1976	John Stonehouse		Labour		Independent	Believed new Prime Minister James Callaghan did not have a mandate.
14 April 1976	John Stonehouse		Independent		English National
26 July 1976	Jim Sillars		Labour		Scottish Labour	Resigned from Labour over public spending cuts.
	John Robertson		Labour
8 October 1977	Reg Prentice		Labour		Conservative	Believed Labour should be defeated at the next election.
26 November 1977	William Craig		Vanguard		Ulster Unionist	Party wound up
1979–1983 Parliament
22 November 1979	Gerry Fitt		SDLP		Independent Socialist	Dispute with party over talks process.
17 January 1980	James Kilfedder		Ind. Unionist		Ulster Progressive Unionist Party	Formed party (renamed 'Ulster Popular Unionist Party' in March 1980).
20 February 1981	Richard Crawshaw		Labour		SDP	Resigned whip prior to launch of new party, which he joined on 2 March 1981.
	Tom Ellis		Labour		SDP	Resigned whip prior to launch of new party, which he joined on 2 March 1981.
2 March 1981	Tom Bradley		Labour		SDP	Formed new party.
	John Cartwright		Labour		SDP
	John Horam		Labour		SDP
	Robert Maclennan		Labour		SDP
	John Roper		Labour		SDP
	David Owen		Labour		SDP
	Bill Rodgers		Labour		SDP
	Neville Sandelson		Labour		SDP
	Mike Thomas		Labour		SDP
	Ian Wrigglesworth		Labour		SDP
16 March 1981	Christopher Brocklebank-Fowler		Conservative		SDP
19 March 1981	Edward Lyons		Labour		SDP
4 July 1981	James Wellbeloved		Labour		SDP
7 September 1981	Michael O'Halloran		Labour		SDP
1 October 1981	Dr Dickson Mabon		Labour		SDP
5 October 1981	Bob Mitchell		Labour		SDP
6 October 1981	David Ginsburg		Labour		SDP
7 October 1981	James Dunn		Labour		SDP
	Tom McNally		Labour		SDP
29 October 1981	Eric Ogden		Labour		SDP
16 November 1981	John Grant		Labour		SDP
30 November 1981	George Cunningham		Labour		Independent Labour
2 December 1981	Ronald Brown		Labour		SDP	Defected to the SDP
11 December 1981	Bruce Douglas-Mann		Labour		Independent Labour	Subsequently, resigned his seat and restood unsuccessfully for the Social Democratic Party.
	Jeffrey Thomas		Labour		SDP
	Ednyfed Hudson Davies		Labour		SDP
22 January 1982	Bryan Magee		Labour		Independent Labour
12 March 1982	Bryan Magee		Independent Labour		SDP
16 June 1982	George Cunningham		Independent Labour		SDP
2 August 1982	Robert Mellish		Labour		Independent Labour	Dispute with local party.
10 February 1983	Michael O'Halloran		SDP		Independent Labour	Not selected as a candidate for the subsequent election.
1983–1987 Parliament
31 January 1987	John Ryman		Labour		Independent
1987–1992 Parliament
3 March 1988	All 17 Liberal MPs		Liberal		Liberal Democrats	Merger of the SDP and the Liberal Party as the "Social and Liberal Democrats", later Liberal Democrats.
3 March 1988	Robert Maclennan		SDP		Liberal Democrats	Merger of the SDP and the Liberal Party as the "Social and Liberal Democrats", later Liberal Democrats.
	Charles Kennedy		SDP		Liberal Democrats
3 March 1988	Rosie Barnes		SDP		SDP	Objected to the SDP's merger with the Liberal Party.
	John Cartwright		SDP		SDP
	David Owen		SDP		SDP
19 May 1988	Ron Brown		Labour		Independent	Whip suspended over misconduct.
19 August 1988			Independent		Labour	Whip restored.
14 March 1990	Dick Douglas		Labour		Independent	Opposed to party acquiescence in administering the Poll Tax.
24 May 1990	Rosie Barnes		SDP		Independent	Continuing SDP dissolved, sat as independent Social Democrats.
	John Cartwright		SDP		Independent
	David Owen		SDP		Independent
4 October 1990	Dick Douglas		Independent		SNP
25 September 1991	Dave Nellist		Labour		Independent	Whip suspended over links to the Militant tendency.
	Terry Fields		Labour		Independent
13 March 1992	John Browne		Conservative		Ind. Conservative	Whip removed for intention to stand against official candidate after he had been deselected.
1992–1997 Parliament
23 July 1993	Rupert Allason		Conservative		Ind. Conservative	Whip suspended until 1 July 1994 after failing to back Conservative government in confidence motion.
29 November 1994	Nicholas Budgen		Conservative		Ind. Conservative	Whip suspended until 24 April 1995 after failing to back Conservative government in confidence motion.
	Michael Carttiss		Conservative		Ind. Conservative
	Christopher Gill		Conservative		Ind. Conservative
	Teresa Gorman		Conservative		Ind. Conservative
	Antony Marlow		Conservative		Ind. Conservative
	Richard Shepherd		Conservative		Ind. Conservative
	Teddy Taylor		Conservative		Ind. Conservative
	John Wilkinson		Conservative		Ind. Conservative
	Richard Body		Conservative		Ind. Conservative
7 October 1995	Alan Howarth		Conservative		Labour
29 December 1995	Emma Nicholson		Conservative		Liberal Democrats	Resigned saying "The Conservative Party has changed so much, while my principles have not changed at all. I would argue that it is not so much a case of my leaving the party, but the party leaving me."
24 February 1996	Peter Thurnham		Conservative		Independent	Resigned over dismay at the Scott Report and the Nolan Report
13 October 1996			Independent		Liberal Democrats
8 March 1997	George Gardiner		Conservative		Referendum	Resigned after being deselected by local Conservative association.
1997–2001 Parliament
21 November 1997	Peter Temple-Morris		Conservative		Independent 'One Nation Conservative'	Whip removed due to questioned commitment to the Party.
21 June 1998			Independent 'One Nation Conservative'		Labour
9 September 1998	Tommy Graham		Labour		Independent 'Scottish Labour'	Expelled from Party over misconduct.
26 March 1999	Dennis Canavan		Labour		Independent	Expelled from Party after decision to stand for Scottish Parliament against official candidate.
18 December 1999	Shaun Woodward		Conservative		Labour	Direction of party under William Hague
6 March 2000	Ken Livingstone		Labour		Independent	Expelled from Party after decision to stand for Mayor of London against official candidate.
11 April 2001	Charles Wardle		Conservative		Independent	Whip removed after rumours of support for Independent candidate in forthcoming general election.
2001–2005 Parliament
10 December 2001	Paul Marsden		Labour		Liberal Democrats	Left Labour over the war in Afghanistan
2 October 2002	Andrew Hunter		Conservative		Ind. Conservative	Resigned whip in order to ally with the Democratic Unionist Party in Northern Ireland.
23 June 2003	David Burnside		Ulster Unionist		Ind. Unionist	Resigned whip over opposition to the Belfast Agreement. Accepted the whip back on 9 January 2004.
	Martin Smyth		Ulster Unionist		Ind. Unionist	Resigned whip over opposition to the Belfast Agreement. Accepted the whip back on 9 January 2004.
	Jeffrey Donaldson		Ulster Unionist		Ind. Unionist	Resigned whip over opposition to the Belfast Agreement.
23 October 2003	George Galloway		Labour		Independent	Expelled from Party after being found guilty of "bringing the party into disrepute"
9 January 2004	Jeffrey Donaldson		Ind. Unionist		DUP	Joined DUP
25 January 2004	George Galloway		Independent		Respect
25 January 2004	Ann Winterton		Conservative		Independent	Whip suspended over misconduct for telling a joke which alluded to the recent death of 23 illegal immigrant Chinese cockle-pickers in Morecambe Bay.
31 March 2004			Independent		Conservative	Whip restored for apologising.
10 December 2004	Andrew Hunter		Ind. Conservative		DUP
15 January 2005	Robert Jackson		Conservative		Labour	Disagreement with party over higher education funding.
3 February 2005	Jonathan Sayeed		Conservative		Independent	Whip suspended until 7 March 2005 over misconduct.
7 March 2005			Independent		Conservative	.
18 March 2005			Conservative		Independent	Whip withdrawn over misconduct.
25 March 2005	Howard Flight		Conservative		Independent	Whip withdrawn over controversial policy remarks.
6 April 2005	Paul Marsden		Liberal Democrats		Independent Labour	Declared support for Labour Party to win the impending general election.
25 April 2005	Brian Sedgemore		Labour		Liberal Democrats	Unhappy with the direction Labour were heading. Although this was one week before the election, Parliament had been dissolved on 11 April and Sedgemore was no longer a sitting MP.
2005–2010 Parliament
20 October 2006	Clare Short		Labour		Independent	Resigned whip. Declared support for a hung parliament at the next election.
26 June 2007	Quentin Davies		Conservative		Labour	Criticised the direction of the Conservative Party under leadership of David Cameron.
16 September 2007	Robert Wareing		Labour		Independent	Resigned whip after failing in a bid for reselection.
25 September 2007	Andrew Pelling		Conservative		Independent	Whip suspended pending the conclusion of an investigation into the accusations he assaulted his wife, a case which was then dropped by the CPS.
29 January 2008	Derek Conway		Conservative		Independent	Whip suspended pending the conclusion of an investigation into the accusations he misused his Parliamentary Allowances.
12 March 2008	Bob Spink		Conservative		Independent	Resigned from the Conservatives after disagreements with the party.
22 April 2008			Independent		UKIP	Joined UK Independence Party (UKIP)
November 2008			UKIP		Independent	Re-designated Independent stating he had never been a full member.
9 January 2010	Iris Robinson		DUP		Independent	Expelled from the DUP
8 February 2010	David Chaytor		Labour		Independent	Whip suspended over the United Kingdom Parliamentary expenses scandal after criminal charges of false accounting were brought.
	Jim Devine		Labour		Independent
	Elliot Morley		Labour		Independent
25 March 2010	Sylvia, Lady Hermon		Ulster Unionist		Independent	Resigned from party due to opposition to the electoral pact between the Ulster Unionists and the Conservative Party.
2010–2015 Parliament
19 May 2010	Eric Illsley		Labour		Independent	Whip suspended over the United Kingdom Parliamentary expenses scandal after criminal charges of false accounting were brought.
14 October 2010	Denis MacShane		Labour		Independent	Whip suspended over the United Kingdom Parliamentary expenses scandal
23 February 2012	Eric Joyce		Labour		Independent	Whip suspended after drunkenly assaulting fellow politicians, including Stuart Andrew and Phil Wilson, on the parliamentary estate
5 July 2012	Denis MacShane		Independent		Labour	Retakes the whip after police decide not prosecute him over the United Kingdom Parliamentary expenses scandal.
2 November 2012			Labour		Independent	Whip suspended after being found to have submitted false invoices for expenses during the United Kingdom Parliamentary expenses scandal
4 November 2012	Nadine Dorries		Conservative		Independent	Whip removed after taking part in I'm a Celebrity...Get Me Out of Here!
4 February 2013	Chris Huhne		Liberal Democrats		Independent	Suspended from the party after pleading guilty to perverting the course of justice.
8 May 2013	Nadine Dorries		Independent		Conservative	Whip returned
31 May 2013	Patrick Mercer		Conservative		Independent	Resigned the Conservative Party whip after an ongoing enquiry regarding allegations relating to lobbying.
4 June 2013	Mike Hancock		Liberal Democrats		Independent	Resigned from the Liberal Democrats after allegations of sexual offences were made against him.
19 July 2013	David Ward		Liberal Democrats		Independent	Whip withdrawn over anti Israel remarks.
10 September 2013	Nigel Evans		Conservative		Independent	Resigned from the Conservatives after allegations of sexual offences were made against him.
19 September 2013	David Ward		Independent		Liberal Democrats	Received whip back
10 April 2014	Nigel Evans		Independent		Conservative	Found not guilty on all charges, so returned to the Conservative benches
28 August 2014	Douglas Carswell		Conservative		UKIP	Defected and resigned as MP, triggering by-election which he won.
27 September 2014	Mark Reckless		Conservative		UKIP	Defected and resigned as MP, triggering by-election which he won.
22 February 2015	Jack Straw		Labour		Independent	Whip withdrawn after being secretly filmed apparently offering his services to a private company for cash.
23 February 2015	Sir Malcolm Rifkind		Conservative		Independent	Whip withdrawn after being secretly filmed apparently offering his services to a private company for cash.
2015–2017 Parliament
29 September 2015	Michelle Thomson		SNP		Independent	Resigned whip over allegations of mortgage fraud.
24 November 2015	Natalie McGarry		SNP		Independent	Resigned whip over allegations of funds going missing from the accounts of Women for Independence.
28 December 2015	Simon Danczuk		Labour		Independent	Suspended from the Labour Party following allegations of sending sexually explicit text messages to a 17-year-old girl.
27 April 2016	Naz Shah		Labour		Independent	Suspended from the Labour Party following allegations of making anti-semitic remarks.
5 July 2016			Independent		Labour	Suspension overturned and reinstated to party after apologizing for remarks made.
25 March 2017	Douglas Carswell		UKIP		Independent	Left UKIP after internal disagreements and became an independent MP
2017–2019 Parliament
10 July 2017	Anne Marie Morris		Conservative		Independent	Suspended pending investigation over racist remarks alleged
25 October 2017	Jared O'Mara		Labour		Independent	Suspended pending investigation over sexist and homophobic comments
2 November 2017	Kelvin Hopkins		Labour		Independent	Suspended pending investigation due to sexual assault allegations
3 November 2017	Charlie Elphicke		Conservative		Independent	Suspended pending investigation due to sexual assault allegations
23 November 2017	Ivan Lewis		Labour		Independent	Suspended pending investigation due to sexual assault allegations
12 December 2017	Anne Marie Morris		Independent		Conservative	Re-admitted into the party
8 January 2018	Barry McElduff		Sinn Féin		Independent	Suspended over a joke seen as mocking IRA victims.
30 April 2018	John Woodcock		Labour		Independent	Suspended pending investigation due to sexual assault allegations
3 July 2018	Jared O'Mara		Independent		Labour	Re-admitted into the party
12 July 2018			Labour		Independent	Resigned from the Labour Party
14 July 2018	Andrew Griffiths		Conservative		Independent	Suspended following sexting controversy
24 July 2018	Ian Paisley Jr		DUP		Independent	Suspended from party after failing to declare visits to Sri Lanka
30 August 2018	Frank Field		Labour		Independent	Resigned from the Labour Party in protest over anti-semitism and bullying within Labour
21 November 2018	Ian Paisley Jr		Independent		DUP	Suspension lifted and whip restored
6 December 2018	Stephen Lloyd		Liberal Democrats		Independent	Resigned from the Liberal Democrat whip over their call for a second EU referendum
12 December 2018	Charlie Elphicke		Independent		Conservative	Whip restored to support May's Government in a vote of no confidence
	Andrew Griffiths		Independent		Conservative
19 December 2018	Fiona Onasanya		Labour		Independent	Suspended, and later expelled, from the party after being convicted of perverting the course of justice
18 February 2019	Luciana Berger		Labour Co-op		Change UK	Formed new group
	Ann Coffey		Labour		Change UK
	Mike Gapes		Labour Co-op		Change UK
	Chris Leslie		Labour Co-op		Change UK
	Gavin Shuker		Labour Co-op		Change UK
	Angela Smith		Labour		Change UK
	Chuka Umunna		Labour		Change UK
19 February 2019	Joan Ryan		Labour		Change UK	Joined new group
20 February 2019	Heidi Allen		Conservative		Change UK	Joined new group
	Anna Soubry		Conservative		Change UK
	Sarah Wollaston		Conservative		Change UK
22 February 2019	Ian Austin		Labour		Independent	Resigned from the Labour Party in protest over alleged anti-semitism and bullying within Labour
27 February 2019	Chris Williamson		Labour		Independent	Suspended from the Labour Party as he claimed that the party was too apologetic over anti-semitism
1 April 2019	Nick Boles		Conservative		Independent	Resigned the Conservative Party whip over Brexit, taking the label "Independent Progressive Conservative"
4 June 2019	Heidi Allen		Change UK		Independent	Resigned from Change UK
	Luciana Berger		Change UK		Independent
	Gavin Shuker		Change UK		Independent
	Angela Smith		Change UK		Independent
	Chuka Umunna		Change UK		Independent
	Sarah Wollaston		Change UK		Independent
13 June 2019	Chuka Umunna		Independent		Liberal Democrats	Joined the Liberal Democrats.
26 June 2019	Chris Williamson		Independent		Labour	Reinstated by party
28 June 2019			Labour		Independent	Suspended again
10 July 2019	Heidi Allen		Independent		The Independents	Formed new group
	Luciana Berger		Independent		The Independents
	Gavin Shuker		Independent		The Independents
	Angela Smith		Independent		The Independents
	John Woodcock		Independent		The Independents
22 July 2019	Charlie Elphicke		Conservative		Independent	Suspended once again after being charged with sexual assault
14 August 2019	Sarah Wollaston		Independent		Liberal Democrats	Joined the Liberal Democrats
3 September 2019	Phillip Lee		Conservative		Liberal Democrats	Physically crossed the floor during a statement by prime minister Boris Johnson to join the Liberal Democrats
	Guto Bebb		Conservative		Independent	Suspended from the party over defying whip during vote against no-deal Brexit
	Richard Benyon		Conservative		Independent
	Steve Brine		Conservative		Independent
	Alistair Burt		Conservative		Independent
	Greg Clark		Conservative		Independent
	Kenneth Clarke		Conservative		Independent
	David Gauke		Conservative		Independent
	Justine Greening		Conservative		Independent
	Dominic Grieve		Conservative		Independent
	Sam Gyimah		Conservative		Independent
	Philip Hammond		Conservative		Independent
	Stephen Hammond		Conservative		Independent
	Richard Harrington		Conservative		Independent
	Margot James		Conservative		Independent
	Sir Oliver Letwin		Conservative		Independent
	Anne Milton		Conservative		Independent
	Caroline Nokes		Conservative		Independent
	Antoinette Sandbach		Conservative		Independent
	Sir Nicholas Soames		Conservative		Independent
	Rory Stewart		Conservative		Independent
	Ed Vaizey		Conservative		Independent
5 September 2019	Luciana Berger		The Independents		Liberal Democrats
7 September 2019	Amber Rudd		Conservative		Independent	Resigned from the Cabinet and surrendered the Conservative whip
	Angela Smith		The Independents		Liberal Democrats	Joined the Liberal Democrats.
14 September 2019	Sam Gyimah		Independent		Liberal Democrats	Joined the Liberal Democrats.
22 September 2019	Mike Hill		Labour		Independent	Suspended from the party over allegations of sexual assault.
7 October 2019	Stephen Hepburn		Labour		Independent	Suspended from the party over allegations of sexual assault.
7 October 2019	Heidi Allen		The Independents		Liberal Democrats	Joined the Liberal Democrats.
16 October 2019	Louise Ellman		Labour		Independent	Resigned from Labour in protest over Jeremy Corbyn.
21 October 2019	Mike Hill		Independent		Labour	Reinstated after allegations of sexual harassment were dropped.
29 October 2019	Alistair Burt		Independent		Conservative	Whip restored
	Caroline Nokes		Independent		Conservative
	Greg Clark		Independent		Conservative
	Sir Nicholas Soames		Independent		Conservative
	Ed Vaizey		Independent		Conservative
	Margot James		Independent		Conservative
	Richard Benyon		Independent		Conservative
	Steve Brine		Independent		Conservative
	Stephen Hammond		Independent		Conservative
	Richard Harrington		Independent		Conservative
	Stephen Lloyd		Independent		Liberal Democrats	Rejoined the Liberal Democrats.
31 October 2019	Antoinette Sandbach		Independent		Liberal Democrats	Joined the Liberal Democrats.
2019–2024 Parliament
13 December 2019	Neale Hanvey		SNP		Independent	Whip suspended from party over anti-semitic social media posts during election campaign.
23 May 2020	Jonathan Edwards		Plaid Cymru		Independent	Whip suspended after being arrested on suspicion of assault.
2 June 2020	Neale Hanvey		Independent		SNP	Re-admitted to the party after a 6-month suspension.
15 July 2020	Julian Lewis		Conservative		Independent	Whip suspended after "working with Labour and other opposition MPs for his own advantage".
28 September 2020	Claudia Webbe		Labour		Independent	Whip suspended, and later expelled from party, over allegations of harassment.
1 October 2020	Margaret Ferrier		SNP		Independent	Whip suspended from party after breaking COVID-19 travel restrictions.
29 October 2020	Jeremy Corbyn		Labour		Independent	Whip suspended from party for comments made after the release of a report that found the Labour Party under his leadership allowed anti-semitism and harassment of Jewish members. Reinstated to the party on 17 November 2020 but whip not restored by Sir Keir Starmer.
30 December 2020	Julian Lewis		Independent		Conservative
27 March 2021	Kenny MacAskill		SNP		Alba	Resigned from the SNP to join the newly established Alba Party.
28 March 2021	Neale Hanvey		SNP		Alba
25 May 2021	Rob Roberts		Conservative		Independent
18 June 2021	Imran Ahmad Khan		Conservative		Independent
12 January 2022	Anne Marie Morris		Conservative		Independent	Whip withdrawn after rebelling against the government on an opposition day motion to cut VAT on energy bills.
19 January 2022	Christian Wakeford		Conservative		Labour	Resigned from the Conservative Party and joined the Labour Party after expressing no-confidence in Boris Johnson, as result of his actions following revelations over drinking and partying in Downing Street during the UK's lockdowns.
11 February 2022	Neil Coyle		Labour		Independent	Whip suspended, following allegations of making racist comments to a journalist.
2 April 2022	David Warburton		Conservative		Independent	Whip suspended following allegations of sexual assault and possession of cocaine.
29 April 2022	Neil Parish		Conservative		Independent	Whip suspended following allegations of watching pornography whilst in the Commons.
12 May 2022	Anne Marie Morris		Independent		Conservative
26 June 2022	Patrick Grady		SNP		Independent	Resigned from the SNP following allegations of sexual assault, after apologising for sexual advances.
1 July 2022	Christopher Pincher		Conservative		Independent	Whip suspended following an investigation of him drunkenly groping two men.
19 July 2022	Tobias Ellwood		Conservative		Independent	Whip suspended for missing a confidence vote on Boris Johnson's government.
7 September 2022	Nick Brown		Labour		Independent	Whip suspended, following a complaint that had been made against him.
27 September 2022	Rupa Huq		Labour		Independent	Whip suspended, after being accused of making a racist comment about Chancellor Kwasi Kwarteng at the Labour conference.
7 October 2022	Conor Burns		Conservative		Independent	Whip suspended after being sacked over an allegation of serious misconduct.
13 October 2022	Christina Rees		Labour		Independent	Whip suspended, after allegations of bullying her constituency staff.
14 October 2022	Tobias Ellwood		Independent		Conservative
21 October 2022	Chris Matheson		Labour		Independent	Whip suspended, after allegations of sexual misconduct.
1 November 2022	Matt Hancock		Conservative		Independent	Whip suspended after taking part in I'm a Celebrity...Get Me Out of Here!
3 December 2022	Conor Burns		Independent		Conservative
7 December 2022	Julian Knight		Conservative		Independent	Whip suspended after a complaint about him was made to the Metropolitan Police.
	Conor McGinn		Labour		Independent	Whip suspended and was suspended from the Labour Party pending the investigation of a complaint.
29 December 2022	Patrick Grady		Independent		SNP
11 January 2023	Andrew Bridgen		Conservative		Independent	Whip suspended after spreading misinformation about COVID-19 vaccination.
3 March 2023	Rupa Huq		Independent		Labour
5 April 2023	Scott Benton		Conservative		Independent	Whip suspended after admitting to lobbying ministers following a sting by The Times.
23 April 2023	Diane Abbott		Labour		Independent	Whip suspended after remarks made in The Observer.
10 May 2023	Andrew Bridgen		Independent		Reclaim	Joined the Reclaim Party.
24 May 2023	Neil Coyle		Independent		Labour
1 June 2023	Geraint Davies		Labour		Independent	Whip suspended following complaints of "unacceptable behaviour".
9 June 2023	Bambos Charalambous		Labour		Independent	Whip suspended after a complaint was made against him.
5 July 2023	Angus MacNeil		SNP		Independent	Whip suspended for a week following a row with the party's chief whip.
12 October 2023	Lisa Cameron		SNP		Conservative	Defected to the Conservative Party amid a selection contest citing 'toxic and bullying' treatment from colleagues.
18 October 2023	Peter Bone		Conservative		Independent	Whip suspended after an investigation found that he had bullied staff and was sexually inappropriate towards a former member of staff.
26 October 2023	Crispin Blunt		Conservative		Independent	Whip suspended after being arrested on suspicion of rape and possession of drugs.
30 October 2023	Andy McDonald		Labour		Independent	Whip suspended for making “deeply offensive” remarks made at a speech during a pro-Palestine rally.
4 November 2023	Bob Stewart		Conservative		Independent	Surrendered the whip after being found guilty of racially abusing an activist.
20 December 2023	Andrew Bridgen		Reclaim		Independent	Left the Reclaim Party.
5 January 2024	Chris Skidmore		Conservative		Independent	Left the Conservative Party and resigned as an MP, triggering a by-election, over the governmental decision to allow more oil and gas fracking licences.
28 January 2024	Kate Osamor		Labour		Independent	Whip suspended following comments made that the events in Gaza should be remembered on Holocaust Memorial Day.
1 February 2024	Christina Rees		Independent		Labour	Whip restored, following an apology.
24 February 2024	Lee Anderson		Conservative		Independent	Whip suspended for making Islamaphobic comments about Sadiq Khan, and refusing to apologise for them.
11 March 2024	Lee Anderson		Independent		Reform UK	Joined Reform UK following suspension from Conservative Party.
13 March 2024	Andy McDonald		Independent		Labour	Labour Whip restored following investigation over use of controversial phrase.
29 March 2024	Jeffrey Donaldson		DUP		Independent	Party membership suspended following charges of historic sex offences.
9 April 2024	William Wragg		Conservative		Independent	Resigned Tory Whip following the leaking of fellow MP's personal numbers following the sharing of explicit images through a dating app.
12 April 2024	Bambos Charalambous		Independent		Labour	Whip restored following results of investigation.
17 April 2024	Mark Menzies		Conservative		Independent	Whip removed pending investigation of allegations of misuse of campaign funds.
27 April 2024	Dan Poulter		Conservative		Labour	Defected to Labour, describing the Conservatives as "a nationalist party of the right" which "no longer prioritises the NHS".
8 May 2024	Natalie Elphicke		Conservative		Labour	Defected to Labour, describing Sunak's government as "tired and chaotic"
8 May 2024	Kate Osamor		Independent		Labour	Labour Whip restored following results of investigation

Members of Parliament who were suspended from their parliamentary party

These MPs were suspended by their Parliamentary Parties but continued to receive the Whip.

Date	Member	Party		Notes
22 March 2010	Patricia Hewitt		Labour	Suspended over the allegations from the 2010 Cash for Influence Scandal
	Geoff Hoon		Labour
	Stephen Byers		Labour
	Margaret Moran		Labour
5 November 2010	Phil Woolas		Labour	Suspended after being found to have breached the Representation of the People Act 1983; his 2010 general election victory was declared void and he was barred from holding public office for 3 years;

Members of the House of Lords who have changed party affiliation

The House of Lords is not a popularly elected body.

Date	Member	Before		After		Notes
1700–present
1703	John Campbell, 2nd Duke of Argyll		Tory		Whig	Critic of the Tories.
1710	Richard Savage, 4th Earl Rivers		Whig		Tory
1711	John Ashburnham, 1st Earl of Ashburnham		Tory		Whig
1783	Augustus Keppel, 1st Viscount Keppel		Whig		Independent	Resigning as a protest against the Peace of Paris
1793	William Fitzwilliam, 4th Earl Fitzwilliam		Whig		Independent	Resigned over disagreements with the party over involvement in the French Revolutionary Wars
	William Cavendish-Bentinck, 3rd Duke of Portland		Whig		Independent
1794			Independent		Tory
	Frederick Howard, 5th Earl of Carlisle		Whig		Tory
1801	Thomas Pelham, 2nd Earl of Chichester		Whig		Tory
1802	Edward Law, 1st Baron Ellenborough		Whig		Tory
1812	George James Cholmondeley, 4th Earl of Cholmondeley		Whig		Tory
1830	Ulick de Burgh, 1st Marquess of Clanricarde		Tory		Whig
1834	Francis Conyngham, 2nd Marquess Conyngham		Tory		Whig
	Charles Gordon-Lennox, 5th Duke of Richmond		Whig		Conservative	Resigned as Postmaster General of the United Kingdom
	Frederick Robinson, 1st Earl of Ripon		Whig		Conservative	Resigned as Lord Privy Seal
1846	George Hamilton-Gordon, 4th Earl of Aberdeen		Conservative		Peelite	Resigned as Foreign Secretary
	Henry Pelham-Clinton, 5th Duke of Newcastle		Conservative		Peelite	Resigned as Chief Secretary for Ireland
	Edward Eliot, 3rd Earl of St Germans		Conservative		Peelite	Resigned as Postmaster General of the United Kingdom
1853	Charles Canning, 1st Earl Canning		Conservative		Peelite	Resigned as Commissioner of Woods and Forests
1855	Charles Somers-Cocks, 3rd Earl Somers		Conservative		Whig
1884	Lawrence Dundas, 1st Marquess of Zetland		Liberal		Conservative
1886	Edward Stanley, 15th Earl of Derby		Liberal		Liberal Unionist
	Charles Pelham, 4th Earl of Yarborough		Liberal		Liberal Unionist
	Spencer Cavendish, 8th Duke of Devonshire		Liberal		Liberal Unionist
	Francis Russell, 9th Duke of Bedford		Liberal		Liberal Unionist
	Chichester Parkinson-Fortescue, 1st Baron Carlingford		Liberal		Liberal Unionist
	Richard de Aquila Grosvenor, 1st Baron Stalbridge		Liberal		Liberal Unionist
	Thomas Baring, 1st Earl of Northbrook		Liberal		Liberal Unionist
	Edward Hyde Villiers, 5th Earl of Clarendon		Liberal		Liberal Unionist
	Hugh Grosvenor, 1st Duke of Westminster		Liberal		Liberal Unionist
	Francis Russell, 9th Duke of Bedford		Liberal		Liberal Unionist
	Roundell Palmer, 1st Earl of Selborne		Liberal		Liberal Unionist
	Albert Parker, 3rd Earl of Morley		Liberal		Liberal Unionist
	Richard Dawson, 1st Earl of Dartrey		Liberal		Liberal Unionist
	Thomas Spring Rice, 2nd Baron Monteagle of Brandon		Liberal		Liberal Unionist
	George Campbell, 8th Duke of Argyll		Liberal		Independent	Resigned over disagreements on Irish Home Rule.
1891	All Irish Conservative peers		Irish Conservative		Irish Unionist	Conservatives in Ireland merged into new party.
1895	Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne		Liberal		Liberal Unionist
1904	Spencer Cavendish, 8th Duke of Devonshire		Liberal Unionist		Conservative
1904	Ivor Guest, 1st Baron Wimborne		Conservative		Liberal
1905	Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne		Liberal Unionist		Conservative
1912	William Palmer, 2nd Earl of Selborne		Liberal Unionist		Conservative	Conservative and Liberal Unionist parties merged.
1920	John Wodehouse, 2nd Earl of Kimberley		Liberal		Labour
1924	Maurice Towneley-O'Hagan, 3rd Baron O'Hagan		Liberal		Conservative
1923	Richard Haldane, 1st Viscount Haldane		Liberal		Labour
1924	Charles Cripps, 1st Baron Parmoor		Conservative		Labour	To serve as Lord President of the Council in the First MacDonald ministry.
1945	Frederick James Marquis, 1st Earl of Woolton		Independent		Conservative
1947	Charles Kerr, 1st Baron Teviot		National Liberal		Conservative
1948	Oswald Phipps, 4th Marquess of Normanby		Conservative		Labour
1950			Labour		Independent
1959	David Rees Rees-Williams, 1st Baron Ogmore		Labour		Liberal
1975	Alan Mais, Baron Mais		Labour		Liberal
1979	Alfred Robens, Baron Robens of Woldingham		Labour		Conservative	Unhappy with how left wing the Labour Party was becoming.
	Alun Jones, Baron Chalfont		Labour		Independent
	Richard Marsh, Baron Marsh		Labour		Independent
1981	George Brown, Baron George-Brown		Labour		SDP
	Elaine Burton, Baroness Burton of Coventry		Labour		SDP
	Hugh Cudlipp, Baron Cudlipp		Labour		SDP
	John Diamond, Baron Diamond		Labour		SDP
	Jack Donaldson, Baron Donaldson of Kingsbridge		Labour		SDP
	John Harris, Baron Harris of Greenwich		Labour		SDP
	Derek Page, Baron Whaddon		Labour		SDP
	Walter Perry, Baron Perry of Walton		Labour		SDP
	Stephen Taylor, Baron Taylor		Labour		SDP
	Thomas Taylor, Baron Taylor of Gryfe		Labour		SDP
	Henry Walston, Baron Walston		Labour		SDP
	Henry Wilson, Baron Wilson of Langside		Labour		SDP
	Ian Winterbottom, Baron Winterbottom		Labour		SDP
1982	Andrew Cavendish, 11th Duke of Devonshire		Conservative		SDP
	John Edward Poynder Grigg, 2nd Baron Altrincham		Conservative		SDP
	Wayland Hilton Young, 2nd Baron Kennet		Labour		SDP
	Martin Attlee, 2nd Earl Attlee		Labour		SDP
	Herbert Bowden, Baron Aylestone		Labour		SDP
	Robert Hall, Baron Roberthall		Independent		SDP
	Alan Sainsbury, Baron Sainsbury		Labour		SDP
	Hartley Shawcross, Baron Shawcross		Labour		SDP
	Phyllis Stedman, Baroness Stedman		Labour		SDP
	George Thomson, Baron Thomson of Monifieth		Labour		SDP
	Henry Wilson, Baron Wilson of Langside		Labour		SDP
1986	Bob Mellish, Baron Mellish		Labour		SDP
1988	Phyllis Stedman, Baroness Stedman		SDP		SDP	Opposed the SDP's merger with the Liberals
	Robert Skidelsky, Baron Skidelsky		SDP		SDP
	John Diamond, Baron Diamond		SDP		SDP
	Elaine Burton, Baroness Burton of Coventry		SDP		Independent	SDP merged with Liberals
1990	Phyllis Stedman, Baroness Stedman		SDP		Independent	Continuing SDP dissolved
	John Diamond, Baron Diamond		SDP		Independent
	Robert Skidelsky, Baron Skidelsky		SDP		Independent
1992			Independent		Conservative	Joined Conservatives
1995	John Diamond, Baron Diamond		Independent		Labour
1997	David Alton, Baron Alton of Liverpool		Liberal Democrats		Independent	Was unhappy with the pro-choice stance of certain colleagues
	John Attlee, 3rd Earl Attlee		Independent		Conservative
	Vere Harmsworth, 3rd Viscount Rothermere		Conservative		Labour	Over the parties' policies
1998	David Hacking, 3rd Baron Hacking		Conservative		Labour	Over the parties' European policies
	Hugh Thomas, Baron Thomas of Swynnerton		Conservative		Liberal Democrats	Over the parties' policies
	Cherry Drummond, 16th Baroness Strange		Conservative		Independent	Over reduction in the number of hereditary peers
1999	Timothy Beaumont, Baron Beaumont of Whitley		Liberal Democrats		Green	Objected to the party's support of free trade
2000	Barbara Young, Baroness Young of Old Scone		Labour		Independent	After taking up an appointment as Chief Executive of Environment Agency
	Jeffrey Archer, Baron Archer of Weston-super-Mare		Conservative		Independent	Expelled after being jailed for perjury and perverting the course of justice.
2001	Robert Skidelsky, Baron Skidelsky		Conservative		Independent
2002	David Stoddart, Baron Stoddart of Swindon		Labour		Independent	Expelled for backing a Socialist Alliance candidate
2004	Edward Haughey, Baron Ballyedmond		Ulster Unionist		Conservative
May 2004	Malcolm Pearson, Baron Pearson of Rannoch		Conservative		Independent	Expelled for backing UKIP
	Leopold Verney, 21st Baron Willoughby de Broke		Conservative		Independent	Expelled for backing UKIP
	David Robert Stevens, Baron Stevens of Ludgate		Conservative		Independent
	Caroline Cox, Baroness Cox		Conservative		Independent
2005	Craig Mackinlay		UKIP		Conservative	In 2005, following Nigel Farage's loss in Thanet South, Mackinlay joined the Conservatives. In 2015, he was selected by the Conservative Party as their prospective Parliamentary candidate for the Thanet South constituency in 2015, where he beat Farage following a "controversial campaign".
September 2005	Christopher Haskins, Baron Haskins		Labour		Independent	Expelled for donating £2,500 to Liberal Democrats
November 2005	Mike Watson, Baron Watson of Invergowrie		Labour		Independent	Expelled after being convicted of arson
January 2007	Conrad Black, Baron Black of Crossharbour		Conservative		Independent	Expelled after being convicted of fraud
	David Trimble, Baron Trimble		Ulster Unionist		Conservative	Joined the Conservatives "to have a greater impact on politics in the United Kingdom"
	Malcolm Pearson, Baron Pearson of Rannoch		Independent		UKIP	Joined UKIP
	Leopold Verney, 21st Baron Willoughby de Broke		Independent		UKIP	Joined UKIP
March 2008	Shreela Flather, Baroness Flather		Conservative		Independent	Resigned
February 2009	Nazir Ahmed, Baron Ahmed		Labour		Independent	Expelled after being convicted of dangerous driving.
May 2009	Thomas Taylor, Baron Taylor of Blackburn		Labour		Independent	Suspended over Cash for Influence
	Peter Truscott, Baron Truscott		Labour		Independent
June 2009	Stanley Kalms, Baron Kalms		Conservative		Independent	Expelled for backing UKIP
February 2010	Paul White, Baron Hanningfield		Conservative		Independent	Expelled due to Parliamentary expenses scandal
July 2010	John Taylor, Baron Taylor of Warwick		Conservative		Independent	Resigned due to Parliamentary expenses scandal
October 2010	Pola Uddin, Baroness Uddin		Labour		Independent	Expelled due to Parliamentary expenses scandal
	Swraj Paul, Baron Paul		Labour		Independent
	Amir Bhatia, Baron Bhatia		Labour		Independent
February 2011	Anthony Jacobs, Baron Jacobs		Liberal Democrats		Independent	Due to opposition to party policies on taxation.
	Lucius Cary, 15th Viscount Falkland		Liberal Democrats		Independent	Due to opposition to direction of the party
February 2012	Jenny Tonge, Baroness Tonge		Liberal Democrats		Independent	Quit the party rather than apologise due to strong criticisms of Israel.
April 2012	Nazir Ahmed, Baron Ahmed		Labour		Independent	Suspended for comments made about America
June 2012	Nazir Ahmed, Baron Ahmed		Independent		Labour	Suspension lifted after investigation clears Ahmed.
	Ken Maginnis, Baron Maginnis of Drumglass		Ulster Unionist		Independent	Resigned from the party over his anti-gay remarks
July 2012	Mike Watson, Baron Watson of Invergowrie		Independent		Labour	Re-admitted to the Labour Party.
September 2012	David Robert Stevens, Baron Stevens of Ludgate		Independent		UKIP	Joined UKIP
March 2013	Nazir Ahmed, Baron Ahmed		Labour		Independent	Suspended for alleged antisemitism
June 2013	Brian Mackenzie, Baron Mackenzie of Framwellgate		Labour		Independent	Suspended after being found to have offered to lobby for a firm in return for cash
	Jack Cunningham, Baron Cunningham of Felling		Labour		Independent
	John Laird, Baron Laird		Ulster Unionist		Independent
January 2014	Chris Rennard, Baron Rennard		Liberal Democrats		Independent	Suspended for refusing to apologise over sexual assault claims
May 2014	Matthew Oakeshott, Baron Oakeshott of Seagrove Bay		Liberal Democrats		Independent	Due to opposition to direction of the party
August 2014	Chris Rennard, Baron Rennard		Independent		Liberal Democrats	Re admitted to the Liberal Democrats
March 2015	Paul Strasburger, Baron Strasburger		Liberal Democrats		Independent	Resigned over donor allegations
	Qurban Hussain, Baron Hussain		Liberal Democrats		Independent	Resigned after illegally bringing a child into the UK from Pakistan
May 2015	Barbara Young, Baroness Young of Old Scone		Independent		Labour	Rejoined the party
	Alan Sugar, Baron Sugar		Labour		Independent	Resigned from the party over its direction
July 2015	John Sewel, Baron Sewel		Labour		Independent	Suspended from party following reports of an orgy featuring prostitutes and cocaine.
September 2015	Ros Altmann, Baroness Altmann		Labour		Conservative	Expelled after it was discovered she had been a Labour member at the time she was already a Conservative minister.
October 2015	Andrew Adonis, Baron Adonis		Labour		Independent	Relinquished the Labour whip while heading a commission on major infrastructure projects.
	Norman Warner, Baron Warner		Labour		Independent	Resigned in protest at the direction the party was heading under Jeremy Corbyn.
	Anthony Grabiner, Baron Grabiner		Labour		Independent
September 2016	Emma Nicholson, Baroness Nicholson of Winterbourne		Liberal Democrats		Conservative	Disagreed with the party's view on the European Union and grammar schools.
	Zahida Manzoor, Baroness Manzoor		Liberal Democrats		Conservative
	Jim O'Neill, Baron O'Neill of Gatley		Conservative		Independent	Resigned over concerns that May was not committed to the 'Northern Powerhouse'
September 2016	Parry Mitchell, Baron Mitchell		Labour		Independent	Resigned in protest at the direction the party was heading under Jeremy Corbyn.
January 2017	Alex Carlile, Baron Carlile of Berriew		Liberal Democrats		Independent	Disagreed with the party's direction.
September 2018	Anthony Lester, Baron Lester of Herne Hill		Liberal Democrats		Independent	Suspended over allegations of sexual harassment
December 2018	Leopold Verney, 21st Baron Willoughby de Broke		UKIP		Independent	Quit the party
	David Robert Stevens, Baron Stevens of Ludgate		UKIP		Independent	Quit the party over Gerard Batten's support and hiring of Tommy Robinson
March 2019	David Steel, Baron Steel of Aikwood		Liberal Democrats		Independent	Suspended after he stated that he was aware Cyril Smith had been a child abuser.
May 2019			Independent		Liberal Democrats	Re-admitted to the party
	Michael Heseltine, Baron Heseltine		Conservative		Independent	Suspended over his support for the Lib Dems during the 2019 EU election
	Andrew Cooper, Baron Cooper of Windrush		Conservative		Independent	Suspended over his support for the Lib Dems during the 2019 EU election
	Michael Cashman, Baron Cashman		Labour		Independent	Resigned over his support for the Lib Dems during the 2019 EU election
	Lewis Moonie, Baron Moonie		Labour		Independent	Suspended from the party over allegations of transphobia.
July 2019	Chris Holmes, Baron Holmes of Richmond		Conservative		Independent	Suspended due to allegations of sexual assault
July 2019	David Triesman, Baron Triesman		Labour		Independent	Resigned over antisemitism within the Labour Party under Jeremy Corbyn
	Leslie Turnberg, Baron Turnberg		Labour		Independent
	Ara Darzi, Baron Darzi of Denham		Labour		Independent
October 2019	Andrew Stone, Baron Stone of Blackheath		Labour		Independent	Suspended from the party over allegations of sexual assault and transphobia.
	Malcolm Pearson, Baron Pearson of Rannoch		UKIP		Independent	Quit the party over party infighting.
January 2020	David Lea, Baron Lea of Crondall		Labour		Independent	Suspended from the party over allegations of stalking women.
February 2020	David Steel, Baron Steel of Aikwood		Liberal Democrats		Independent	Resigned after a report found he did not act on allegations of child abuse by Cyril Smith.
June 2020	Parry Mitchell, Baron Mitchell		Independent		Labour	Rejoined because of Keir Starmer's handling of antisemitism within the party.
	David Triesman, Baron Triesman		Independent		Labour
	Leslie Turnberg, Baron Turnberg		Independent		Labour
October 2020	Chris Holmes, Baron Holmes of Richmond		Independent		Conservative	Re-admitted after being found not guilty of sexual assault.
November 2020	Meghnad Desai, Baron Desai		Labour		Independent	Resigned over antisemitism within the Labour Party.
October 2021	Margaret Ritchie, Baroness Ritchie of Downpatrick		Independent		Labour	Joined Labour.
November 2022	Michelle Mone, Baroness Mone		Conservative		Independent	Whip removed over PPE contracts controversy.
December 2022	Charles Chetwynd-Talbot, 22nd Earl of Shrewsbury		Conservative		Independent	Whip removed after being found to have lobbied for pay for companies during the COVID-19 pandemic against parliamentary rules.
	Mary Goudie, Baroness Goudie		Labour		Independent	Whip removed following committee report finding her to have been guilty of agreeing to provide parliamentary advice in return for payment.
July 2023	Mary Goudie, Baroness Goudie		Independent		Labour	Readmitted after six month expulsion

Members of the European Parliament who have changed party affiliation

Date	Member	Before		After		Notes
1979–1984 Parliament
January 1984	Michael Gallagher		Labour		SDP	Created new party
1994–1999 Parliament
June 1997	Ken Coates		Labour		Scottish Socialist	Expelled from the Labour Party
	Hugh Kerr		Labour		Scottish Socialist	Expelled from the Labour Party
January 1998	James Moorhouse		Conservative		Liberal Democrats	Joined the Lib Dems after being de-selected
March 1999	Brendan Donnelly		Conservative		Pro-Euro Conservative	Created new party
	John Stevens		Conservative		Pro-Euro Conservative	Created new party
May 1999	Christine Oddy		Labour		Independent	Expelled from the Labour Party
1999–2004 Parliament
February 2000	Michael Holmes		UKIP		Independent	Quit the party after power struggle with UKIP's National Executive Committee
July 2000	Bill Newton Dunn		Conservative		Liberal Democrats	Joined the Lib Dems
August 2002	Richard Balfe		Labour		Conservative	Expelled from the Labour Party
2004–2009 Parliament
July 2004	Ashley Mote		UKIP		Independent	Expelled from UKIP after being jailed for fraud
January 2005	Robert Kilroy-Silk		UKIP		Veritas	Created new party, and then went independent.
March 2007	Tom Wise		UKIP		Independent	Expelled from UKIP (Pending fraud trial)
	Jim Allister		DUP		TUV	Created new party
November 2007	Sajjad Karim		Liberal Democrats		Conservative	Joined the Conservatives
June 2008	Den Dover		Conservative		Independent	Expelled from the Conservatives for violating European Parliament expenses rules
2009–2014 Parliament
September 2009	Edward McMillan-Scott		Conservative		Independent	Expelled from the Conservatives
January 2010	Nikki Sinclaire		UKIP		Independent	Expelled from UKIP for "extreme views"
March 2010	Edward McMillan-Scott		Independent		Liberal Democrats	Joined the Lib Dems
May 2011	David Campbell Bannerman		UKIP		Conservative	Re-joined the Conservatives
March 2012	Roger Helmer		Conservative		UKIP	Joined UKIP
October 2012	Andrew Brons		BNP		Independent	Quit the party
February 2013	Marta Andreasen		UKIP		Conservative	Joined the Conservatives.
September 2013	Mike Nattrass		UKIP		Independent	Deselected by UKIP for the 2014 European election. He subsequently resigned from the party calling Farage's leadership "totalitarian"
	Godfrey Bloom		UKIP		Independent	Whip withdrawn due to inappropriate comments
2014–2019 Parliament
January 2015	Amjad Bashir		UKIP		Conservative	Joined the Conservatives.
March 2015	Janice Atkinson		UKIP		Independent	Suspended and then later expelled from UKIP due to allegations of impropriety
October 2016	Steven Woolfe		UKIP		Independent	Quit the party
November 2016	Diane James		UKIP		Independent	Quit the party
October 2017	Richard Ashworth		Conservative		Independent	Suspended from party and whip withdrawn
	Julie Girling		Conservative		Independent	Suspended from party and whip withdrawn
January 2018	Jonathan Arnott		UKIP		Independent	Quit the party, stating leader Henry Bolton "not the right person for the job"
May 2018	James Carver		UKIP		Independent	Quit the party over leader Gerard Batten's support for Tommy Robinson
September 2018	William Legge, 10th Earl of Dartmouth		UKIP		Independent	Quit the party, labelling it "homophobic and anti-Islamic"
October 2018	Bill Etheridge		UKIP		Libertarian	Defected to the Libertarian Party.
November 2018	Louise Bours		UKIP		Independent	Quit the party
	Patrick O'Flynn		UKIP		SDP	Joined the extant SDP.
December 2018	Nigel Farage		UKIP		Independent	Quit the party.
	Nathan Gill		UKIP		Independent	Quit the party.
	David Coburn		UKIP		Independent	Quit the party.
	Paul Nuttall		UKIP		Independent	Quit the party.
	Tim Aker		UKIP		Thurrock Ind.	Quit the party
	Julia Reid		UKIP		Independent	Quit the party.
	Jonathan Bullock		UKIP		Independent	Quit the party.
November 2018	Diane James		Independent		Brexit Party	Joined the Brexit Party
	David Coburn		Independent		Brexit Party
	Nigel Farage		Independent		Brexit Party
	Nathan Gill		Independent		Brexit Party
	Julia Reid		Independent		Brexit Party
	Tim Aker		Thurrock Ind.		Brexit Party
	Jonathan Bullock		Independent		Brexit Party
	Bill Etheridge		Libertarian		Brexit Party
	Paul Nuttall		Independent		Brexit Party
April 2019	Jill Seymour		UKIP		Brexit Party	Joined the Brexit Party
	Jane Collins		UKIP		Brexit Party
	Margot Parker		UKIP		Brexit Party
	Jonathan Arnott		Independent		Brexit Party
	Julie Girling		Independent		Change UK	Joined new group
	Richard Ashworth		Independent		Change UK
	Ray Finch		UKIP		Brexit Party	Joined the Brexit Party
May 2019	Julie Girling		Change UK		Independent	Voiced support for the Liberal Democrats in the 2019 European elections
2019–2024 Parliament
September 2019	Andrew England Kerr		Brexit Party		Whip withdrawn for "irreconcilable differences regarding a likely conflict of interest"
November 2019	Louis Stedman-Bryce			Resigned from the party
December 2019	Lucy Harris			Joined the Conservative Party
	Lance Forman
	John Longworth
	Annunziata Rees-Mogg

London Assembly Members who have changed party affiliation

Date	Member	Before		After		Notes
2004–2008 Assembly
September 2005	Damian Hockney			First joined Veritas then created new party One London
	Peter Hulme-Cross
2008–2012 Assembly
August 2010	Richard Barnbrook			Expelled from the BNP
2016–2021 Assembly
December 2018	Peter Whittle			Quit the party
January 2020	David Kurten			Quit the party in order to run as an Independent in the 2020 London mayoral election
September 2020	David Kurten			Formed own party

Members of the Senedd who have changed party affiliation

Date	Member	Before		After		Notes
1999–2003 Assembly
2000	Rod Richards			Whip withdrawn after abstaining on a budget vote
2003–2007 Assembly
2005	Peter Law			Left party in protest at the use of all-woman shortlists
2007–2011 Assembly
2009	Mohammad Asghar			Explained that he was a "Unionist" and against Welsh independence
2010	Mick Bates			Suspended after it was discovered that he would be prosecuted for assault
2016–2021 Assembly/Senedd
2016	Nathan Gill			Left UKIP group to sit as an independent
	Dafydd Elis-Thomas			Left Plaid Cymru party to support the Labour minority government.
2017	Neil McEvoy			Suspended from party group
	Mark Reckless			Left UKIP group to sit as an independent within the Conservative Group
	Carl Sargeant			Sargeant was suspended from Welsh Labour following allegations about his personal conduct.
2018	Mandy Jones			Left UKIP group to sit as an independent after criticising Neil Hamilton
	Caroline Jones			Left UKIP group to sit as an independent, stating the party had moved "to a more far-right position"
	Jenny Rathbone			Suspended over remarks about Jewish people.
2019	Jenny Rathbone			Re-admitted
	Michelle Brown			Left UKIP group to sit as an independent
	Mark Reckless			Left Conservative Group on 'good terms' to sit as an independent
	Caroline Jones			Joined the Brexit Party
	Mandy Jones			Joined the Brexit Party
	Mark Reckless			Joined the Brexit Party
	David Rowlands			Joined the Brexit Party
	Gareth Bennett			Quit the Party
2020	Nick Ramsay			Arrested on 1 January 2020 and suspended from the Conservative group the following day.
	Neil McEvoy			Formed the Welsh National Party
	Gareth Bennett			Joined the Abolish the Welsh Assembly Party
	Nick Ramsay			Re-admitted
	Caroline Jones			Left the Brexit Party due to their anti-devolution stance
	Caroline Jones			Formed a new group: Independent Alliance for Reform
	Mandy Jones
	David Rowlands
	Mark Reckless			Joined the Abolish the Welsh Assembly Party
2021	Alun Davies			Suspended after allegedly being involved in alcohol drinking on the Senedd estate, that could have broken COVID restrictions.
				Re-admitted
	Nick Ramsay			Left the Conservative Group after being unhappy with the party's direction, and wanting to stand as an Independent in the Senedd election, after being deselected by the local group.
2021–2026 Senedd
2022	Rhys ab Owen			Suspended on 8 November 2022 pending an investigation by the Senedd's standards watchdog over an alleged breach of the code of conduct.

Members of the Scottish Parliament who have changed party affiliation

Date	Member	Before		After		Notes
1999–2003 Parliament
2002	Dorothy-Grace Elder			Resigned over disagreement over how the party was run
2003	Margo MacDonald			Ranked low on the party list for re-election so stood as an independent and was expelled from party; re-elected as an independent
2003–2007 Parliament
2004	Campbell Martin			Expelled from party and stood as an independent
2005	Mike Watson, Baron Watson of Invergowrie			Expelled from the Party after causing a fire and resigned
	Brian Monteith			Had whip withdrawn over misconduct
2006	Rosemary Byrne			Created new Party Solidarity
	Tommy Sheridan			Created new Party Solidarity
2007–2011 Parliament
March 2011	Hugh O'Donnell			Quit party over its direction
2011–2016 Parliament
April 2012	Bill Walker			Expelled from the SNP for allegedly not declaring the allegations cited in his uncontested divorce proceedings during the MSP vetting process.
October 2012	John Finnie			Resigned over the party's decision to support NATO membership for an independent Scotland
	Jean Urquhart			Resigned over the party's decision to support NATO membership for an independent Scotland
September 2014	John Wilson			Resigned over the party's decision to support NATO membership for an independent Scotland
October 2014	John Finnie			Joined the Scottish Green Party, but continued to sit as an Independent MSP
December 2014	John Wilson			Joined the Scottish Green Party, but continued to sit as an independent MSP
September 2015	Jean Urquhart			Joined the RISE, but continued to sit as an independent MSP
2016–2021 Parliament
12 May 2016	Ken Macintosh			Elected Presiding Officer and consequently had to renounce his party affiliation.
15 November 2017	Alex Rowley			Suspended by Labour due to allegations about his conduct.
16 November 2017	Mark McDonald			Suspended by SNP due to allegations about his conduct. Left the SNP on 6 March 2018.
19 December 2017	Alex Rowley			Reinstated by Labour
February 2020	Derek Mackay			Suspended by SNP for sending inappropriate messages to a 16-year-old boy
24 November 2020	Michelle Ballantyne			Left the Conservative Party due to disagreements over policy relating to the Covid-19 pandemic.
18 December 2020	Andy Wightman			Resigned over policy differences
12 January 2021	Michelle Ballantyne			Became Scots chief of what is now Reform UK after the name change from Brexit Party
2021–2026 Parliament
13 May 2021	Alison Johnstone			Elected Presiding Officer.
27 September 2023	Fergus Ewing			Suspended for a week over rebellions against the government.
28 October 2023	Ash Regan			Defected to the Alba Party.

Members of the Northern Ireland Assembly who have changed party affiliation

Date	Member	Before		After		Notes
1998–2003 Assembly
1999	Cedric Wilson			Disagreed with UKUP leader Robert McCartney, as they wanted to remain in the Assembly to challenge unionists in favour of the Belfast Agreement
	Patrick Roche			Disagreed with UKUP leader Robert McCartney, as they wanted to remain in the Assembly to challenge unionists in favour of the Belfast Agreement
	Norman Boyd			Disagreed with UKUP leader Robert McCartney, as they wanted to remain in the Assembly to challenge unionists in favour of the Belfast Agreement
	Roger Hutchinson			Disagreed with UKUP leader Robert McCartney, as they wanted to remain in the Assembly to challenge unionists in favour of the Belfast Agreement
				Expelled for accepting seats on two statutory committees, against party policy.
November 2000				Joined DUP
2003–2007 Assembly
18 December 2003	Jeffrey Donaldson			Disagreements over the Good Friday Agreement negotiations and the position taken by party leader David Trimble
	Norah Beare
	Arlene Foster
23 November 2005	Francie Molloy			Suspended from the party due to publicly disagreeing with the policy on local government reform.
15 January 2007	Geraldine Dougan			Resigned from party
2 February 2007	Davy Hyland			Resigned from party
15 February 2007	Paul Berry			Stood as an independent but was not elected
18 February 2007	George Ennis
2007–2011 Assembly
29 November 2007	Gerry McHugh			Believed that "Fianna Fáil was the right party to bring about change in Northern Ireland".
30 March 2010	Major Alan MacFarland			Disagreed with the UUP's electoral pact with the Conservative Party
3 June 2010	Dawn Purvis			Disagreed with direction of party
3 January 2011	David McClarty			Resigned after being de-selected
2011–2016 Assembly
27 January 2012	David McNarry			Suspended from the UUP.
4 October 2012				Joined UKIP.
14 February 2013	Basil McCrea			Formed new party
	John McCallister			Formed new party
10 July 2014				Response to allegations of impropriety against leader Basil McCrea
2016–2017 Assembly
18 December 2016	Jonathan Bell			Suspended from the DUP following fallout with party leader
2017–2022 Assembly
18 May 2018	Jim Wells			Suspending after attacking the leadership
3 March 2020	Trevor Lunn			Quit Alliance due to an 'irreconcilable internal problem'
1 July 2021	Alex Easton			Resigned from the party

Police and crime commissioners (PCCs) who have changed party affiliation

Date	Member	Before		After		Notes
2012–2016 Commissioners
2014	Olly Martins			Suspended from the Labour Party and investigated by the Independent Police Complaints Commission after he disclosed confidential information about the death of a man in police custody.
2016–2021 Commissioners
April 2019	Jane Kennedy			Resigned from the Labour Party alleging anti-semitism.

Bibliography

• David Butler and Gareth Butler, Twentieth Century British Political Facts (Palgrave Macmillan, 2005)