The Crewe Works Railway was a narrow gauge internal tramway system serving Crewe Works, the main locomotive construction works of the London and North Western Railway (LNWR) and later the London Midland and Scottish Railway (LMS). The system was first introduced by John Ramsbottom the LNWR Locomotive Superintendent from 1857 and it was a pioneering use of locomotive propelled vehicles within a manufacturing plant. The Crewe system was soon adopted elsewhere. There were four sections to this system built at different times and each in turn significantly altered several times before final abandonment. The four sections were: