LMS Rebuilt Royal Scot Class

The Rebuilt Royal Scot Class was a class of 4-6-0 steam locomotives formed when the London, Midland and Scottish Railway and British Railways replaced the life expired parallel boilers of 70 Royal Scot Class engines with type 2A tapered boilers between 1943 and 1955. A prototype rebuild of 1935, number 6170 British Legion, is sometimes counted as a 71st member but differs enough technically to be treated separately. The LMS rated them 6P and British Railways later revised this to 7P. Two rebuilt engines, 46154 The Hussar and 46162 Queens Westminster Rifleman, took part in the 1948 Locomotive Exchange Trials, where a rebuilt Royal Scot appeared able to match the maximum performance of larger Pacifics. All were withdrawn between 1962 and 1965, and only two survive in preservation.