Class 37/0 No. 37104 entered traffic in January 1963 after being out-shopped from English Electric’s Vulcan Foundry as No. D6804. The implementation of TOPS led to the locomotive being renumbered as 37104 in 1974. Following Railfreight’s rebranding in 1987 and the introduction of the six sub-sectors, No. 37104 was an early recipient of the new Triple Grey livery and was one of only a few locomotives to carry the Railfreight General sector decals. Being allocated to Stratford, the locomotive also carried the depot’s distinctive Cockney Sparrow motif on the body-sides. No. 37104 later joined the Engineers fleet before withdrawal in 2000.