British Railways was created in 1948 by the merger of the big four grouped railway companies; the Great Western Railway (GWR), the London, Midland and Scottish Railway (LMS), the London and North Eastern Railway (LNER) and the Southern Railway (SR). It was split into six regions, with former GWR lines becoming the Western Region (WR), former LMS lines in England becoming the London Midland Region (LMR), former line of the SR becoming the Southern Region, northern LNER lines becoming the North Eastern Region, southern LNER lines becoming the Eastern Region, and ex-LMS and ex-LNER lines in Scotland becoming the Scottish Region.
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From ? started to build its own steam locomotives. The designs were largely based on pre-nationalisation LMS designs, but incorporating some American ideas and other modifications. 999 BR standards were construced. The last, Evening Star was built in 1960.
