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    https://en.wikipedia.org › wiki › Steam_locomotives_of_British_Railways

    Steam locomotives of British Railways - Wikipedia

    • The steam locomotives of British Railways were used by British Railways over the period 1948–1968. The vast majority of these were inherited from its four constituent companies, the "Big Four". In addition, BR built 2,537 steam locomotives in the period 1948–1960, 1,538 to pre-nationalisation designs and 999 to its own standard designs. These locomotives h… 展开

    Background

    British Railways was created on 1 January 1948 principally 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 Nort… 展开

    Locomotives inherited from constituent companies

    A wide variety of locomotives was acquired from the four major constituent companies. These had generally standardised their own designs. See:
    • Locomotives of the Great Western Railway
    • … 展开

    Classification

    After initially using letter prefixes (E for ex-LNER, M for ex-LMS, S for ex-SR, and W for ex-GWR locomotives, as used for other inherited rolling stock), a numbering scheme was decided on in March 1948. Generally ex-G… 展开

    Locomotives acquired from the War Department

    In addition to the inherited and new-build locomotives, B.R. also purchased 620 locomotives of three types from the War Department. These had been in use on railways in Great Britain and elsewhere in Europe during the … 展开

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