Class 31 - 31418 BR Blue - DCC Sound Livery_Colas cutting being undertaken by a

cutting being undertaken by a Harry Needle team at Crewe Diesel Depot

each with individual numbers

at a maximum speed of 80mph

Cardiff Canton

by which point half the sub class were south of the border

Class 31 - 31418 BR Blue - DCC Sound Livery_Colas cutting being undertaken by a31418 BR Blue Between 1971 and 1975, 24 Class 31s were upgraded with electric train heating capability (ETH) courtesy of a 320kW Brush BL100 30 alternator, the same as fitted to the similarly modified Class 45 1 Peaks and Class 47 4s. Powered directly from the engine, this provided an impressive ETH index rating of 66, perfect for their expected duties shuttling empty coaching stock (ECS) in and out of Kings Cross, Paddington and St. Pancras as well