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Oliver Dimsdale (born 28 October 1972)[1] is an English actor, known for portraying Louis Trevelyan in the BBC TV serial He Knew He Was Right.

Oliver Dimsdale
Born (1972-10-28) 28 October 1972 (age 46)
Years active2001–present
Spouse(s)Zoe Tapper (2008–present)
ChildrenAva Dimsdale (born April 2011)

Early life and educationEdit

Born in Aylesbury, Buckinghamshire, he was brought up in Hertfordshire. Dimsdale is the son of a Swiss mother.[2] He has a sister, Anna.[3] He developed a stammer at age six which he has since partially brought under control through speech therapy.[2] Dimsdale attended the Dragon School and then Eton College,[4] and went on to study French and Economics at university.[2] He trained at Guildhall School of Music and Drama, graduating in 1999.[5]


Dimsdale began his performing career at the age of thirteen in a radio play for the BBC.[2] He has lent his voice to the radio productions In The Company of Men and Sharp Focus.[6] His film credits include RocknRolla (2008), Cosi (2010) and the short film Pest.

On television, he played the lead roles of Louis Trevelyan in the 2004 adaptation of He Knew He Was Right, and Dr Felix Quinn in the 2008 ITV1 medical drama Harley Street. He has also made guest appearances in Doctors, Casualty and Lark Rise to Candleford.

Dimsdale is the co-founder and co-Artistic Director of Filter Theatre.[6] His theatre work includes Great Expectations, The Changeling, Five Finger Exercise and The Tempest.[6]

Personal lifeEdit

Dimsdale married actress Zoe Tapper on 30 December 2008.[7] In April 2011, she gave birth to their daughter, Ava.[8]


Dimsdale won Best Fringe Performer in the 2002 Manchester Evening News Theatre Awards, for the Royal Exchange performance of Paul Herzberg's The Dead Wait.[6][9]



Year Title Role Notes
2001 Doctors James Byford 1 episode: Thin Ice
2003 The Inspector Lynley Mysteries Mark Penellin 1 episode: A Suitable Vengeance
2003 Byron Percy Bysshe Shelley TV film
2004 He Knew He Was Right Louis Trevelyan
2005 Dalziel and Pascoe Danny Latimer 2 episodes: Dead Meat, Parts One and Two
2005 Casualty Michael Mallins 1 episode: And On That Farm
2006 Nostradamus Michael Nostradamus TV film
2007 Fallen Angel Michael Appleton
2008 Harley Street Dr Felix Quinn
2009 Lark Rise to Candleford George Ellison 1 episode: Episode 2.4
2009 Breaking the Mould Ernst Chain TV film
2013 Ambassadors French Ambassador TV series
2013 Downton Abbey (Christmas episode) The Prince of Wales TV series
2016 Father Brown Ned Le Broc Episode 4.7 "The Missing Man"
2016 Mr Selfridge Mr. Keen Episodes 4.5, 4.6, 4.7, 4.9, 4.10
2016 - 2019 Grantchester Daniel Marlowe 7 episodes
2019 The Last Czars Pierre 6 Episodes - Netflix docu-drama


Year Title Role Notes
2003 Pest Jonathan Kitcher Short film
2008 RocknRolla Posh Man in Shorts
2010 Cosi Phillip
2011 What You Will Sir Toby Belch Mockumentary
2014 Good People Supt Ray Martin

Video gamesEdit

Year Title Role Notes
2015 Everybody's Gone to the Rapture Stephen Appleton Voice role



  1. ^ Debrett's People of Today, Oliver Dimsdale, Esq Profile Archived 4 November 2013 at the Wayback Machine Retrieved 2011-03-25.
  2. ^ a b c d "He Knew He Was Right" press pack: Oliver Dimsdale - Louis Trevelyan BBC Press Office. 2004-03-30.
  3. ^ "Introducing Great Expectations" (PDF). Royal Exchange Theatre. Retrieved 29 June 2009.
  4. ^ Eton College – Famous Old Etonians – Drama See relevant listing.
  5. ^ Guildhall School of Music and Drama: Acting graduates include… Archived 27 June 2008 at the Wayback Machine See relevant listing.
  6. ^ a b c d Chichester Festival Theatre: What’s On: Oliver Dimsdale
  7. ^ Didcock, Barry. "Free spirit: Zoe Tapper". Sunday Herald. Archived from the original on 19 June 2009. Retrieved 29 June 2009. Cite uses deprecated parameter |deadurl= (help); Italic or bold markup not allowed in: |publisher= (help)
  8. ^
  9. ^ Nominations for the M.E.N Theatre Awards 2002-11-15. Retrieved on 2009-06-29.
  10. ^ a b c d Oliver Dimsdale | London Theatre Database

External linksEdit