A total of 512 Brush Type 4 locomotives were built between 1962 and 1968 at Crewe Works and the Brush Falcon Works in Loughborough. Although an early design, built without full prototype testing, this was a very successful class, and 512 locomotives were built. Type 4 locomotives were intended for express passenger work.
D1970 (renumbered 47269 and latterly 47643) was built at Crewe, and when delivered in October 1965 was allocated to Haymarket Depot, Edinburgh. Since then it has been based in Scotland for most of its life. The locomotive was withdrawn in 1991 with fire damage to the engine room wiring, and has been extensively restored.
This Class saw extensive use in Scotland on express passenger traffic, including use on push-pull services between Edinburgh and Glasgow.
