Formation

The rail transport system in Great Britain developed during the 19th century. After the grouping of 1923 under the Railways Act 1921, there were four large railway companies, each dominating its own geographic area: the Great Western Railway (GWR), the London, Midland and Scottish Railway (LMS), the London and North Eastern Railway (LNER) and the Southern Railway (SR). During World War I the railways were under state control, which continued until 1921. Complete nationalisation had been considered, and the Railways Act 1921undefined is sometimes considered as a precursor to that, but the concept was rejected. Nationalisation was subsequently carried out after World War II, under the Transport Act 1947. This Act made provision for the nationalisation of the network, as part of a policy of nationalising public services by Clement Attlee's Labour Government. British Railways came into existence as the business name of the Railway Executive of the British Transport Commission (BTC) on 1 January 1948 when it took over the assets of the Big Four.

There were also joint railways between the Big Four and a few light railways to consider. Excluded from nationalisation were industrial lines like the Oxfordshire Ironstone Railway. The London Underground – publicly owned since 1933 – was also nationalised, becoming the London Transport Executive of the British Transport Commission. The Bicester Military Railway was already run by the government. The electric Liverpool Overhead Railway was also excluded from nationalisation.undefined

The Railway Executive was conscious that some lines on the (then very dense) network were unprofitable and hard to justify socially, and a programme of closures began almost immediately after nationalisation. However, the general financial position of BR became gradually poorer, until an operating loss was recorded in 1955. The Executive itself had been abolished in 1953 by the Conservative government, and control of BR transferred to the parent Commission. Other changes to the British Transport Commission at the same time included the return of road haulage to the private sector.

At this point, BR was set into 6 regions.