- 1 May
- 1844 – London and Croydon Railway and South Eastern Railway open Bricklayers Arms station as an alternative terminus to London Bridge station.
- 1857 – North and South Western Junction Railway opens line from South Acton to Hammersmith & Chiswick.
- 1860 – Great Western Railway starts passenger services between Southall and Brentford Town.
- 1864 – Mid-Kent Railway opens the New Beckenham to Addiscombe Line.
- 1883 – District Railway extends from Acton Town to Hounslow Town.
- 1907 – Great Western Railway opens Denham to Uxbridge High Street branch line.
- 1939 – A collision between trains at Farringdon station injures 45.
- 1960 – Death of Charles Holden, architect of 55 Broadway and many London Underground stations.
- 1968 – British Rail closes the freight only Merton Abbey branch line.
- 1970 – The Port of London Authority closes its remaining dock railway system.
- 1979 – Jubilee line opens between Stanmore and Charing Cross taking over Bakerloo line services between Stanmore and Baker Street.