- 1 September
- 1866 – Cannon Street station opens as the City of London terminus of the South Eastern Railway.
- 1887 – Metropolitan Railway extends from Pinner to Rickmansworth.
- 1892 – Metropolitan Railway extends from Chalfont & Latimer to Aylesbury.
- 1913 – Metropolitan Railway takes over the Great Northern and City Railway.
- 1939 – Great Western Railway ends passenger services on Denham to Uxbridge High Street branch line.
- 1968 – Victoria line opens between Walthamstow Central and Highbury & Islington.