London Underground steam locomotives

Initially, services on the Metropolitan Railway (MR) were operated by the Great Western Railway who built a special type of locomotives, the Metropolitan Class, to operate through the tunnels.

From 1864, the MR bought steam locomotives of its own, which operated over its own tracks and those of the Metropolitan District Railway. Through running of various mainline company locomotives continued into the 1960s.

London Underground steam locomotives
 * Metropolitan Railway A Class 4-4-0T, 1864
 * Metropolitan Railway B Class 4-4-0T
 * Metropolitan Railway C Class 0-4-4T, 1891
 * Metropolitan Railway D Class 2-4-0T, 1894
 * Metropolitan Railway E Class 0-4-4T, 1896
 * Metropolitan Railway F Class 0-6-2T, 1901
 * Metropolitan Railway G Class 0-6-4T, 1915
 * Metropolitan Railway H Class 4-4-4T, 1920
 * Metropolitan Railway K Class 2-6-4T, 1924
 * Metropolitan Railway Departmental Steam Locomotives 0-6-0ST, 0-6-0T & 0-4-2ST
 * Ex-GWR 5700 Class 0-6-0PT.
 * Metropolitan District Railway 4-4-0T
 * Wotton Tramway locomotives
 * Metropolitan Railway Peckett Saddle tanks

Preservation
Metropolitan Railway A Class No. 23 (LT L45) is preserved by the London Transport Museum. Metropolitan Railway E Class No. 1 (LT L44) is preserved at the Buckinghamshire Railway Centre and is generally kept in working order.