British Railways Diesel Electric Classes 44 to 46

Derby Works introduced the first mainline Diesel to UK service with the production of LMS 10000 in 1947, although mainline diesels had previously been tested on post-Grouping main lines prior to being exported. When British Railways'' Modernization Plan of 1955 was initiated by a Pilot Scheme to identify the best features for a future standard diesel fleet, Derby Works upgraded the design to produ...