Allocated to Darnall (Sheffield) from new on 28th December 1962 as D6801 it would be transferred to Tinsley (Sheffield) in April 1964. In October 1971 it moved to Thornaby depot (51L) and when the new TOPS codes for locos and depots came about it was renumbered to 37101, still at Thornaby (TE), where it remained until January 74 and a move back to Tinsley before heading back to the sister depot in the North East at Gateshead (GD) in March 1975. It then went to March depot in October of the same year. Moving around the North East once again, TE (Feb 77), GD (Sept 79), TE (May 82), GD (Sept 85), TE (July 86). A move further south in Jan 87 back to Tinsley before a move to the Western region at Bristol Bath Rd. (BR) in May 1993 where it spend six months with a very brief spell at Cardiff Canton (CF) for a month. In December 1993 it had two allocations, firstly Inverness (IS) then Immingham (IM). The loco went to store in February 1994 and renumbered to 37345 in September 1994 it remained at Immingham and was eventually cut up there in August 2003. Part of the Tinsley Railfreight Distribution sector, 37101 and 37225 are seen at Cardiff Canton with red diamond decals, date unknown.