 History of rail transport in Great Britain 1923–1947

"This article is part of a series on the History of rail transport in Great Britain"

The history of rail transport in Great Britain 1923–1947 covers the period when the British railway system was run by the Big Four group of companies – the London, Midland and Scottish Railway (LMS); the Great Western Railway (GWR); the London and North Eastern Railway (LNER); and the Southern Railway (SR).The period includes the investment following World War I; the rise in competition from the roads in the 1920s; development of steam locomotives capable of sustained 100 mph (160 km/h) running; the Great Depression of the 1930s; World War II and its aftermath; and the lead up to nationalisation during 1947.