British Rail Class 37
Owner Number Numbers Notes
Colas Rail 11 37025* , 37057 , 37099 , 37116 , 37175 , 37219 , 37240 , 37254 , 37418* , 37421 *Preserved on hire to Colas
Direct Rail Services 23 ( 11 active ) 37038 , 059* , 069* , 218 , 259 , 402 , 407 , 419 , 423-425 , 602 , 605* , 716 . Stored ; 401 , 405 , 409 , 422 , 602 , 603 , 604 , 606 , 609 37703 on loan to Bo'ness & Kinneil Railway *37059 , 069 and 605 on loan to Loram UK
Europhoenix 9 37510* , 601* , 608* , 611* , 800* , 884* , 901 . Stored 37146 , 207 *Hired to Rail Operations Group . 37670 was cut up on 09 March 2018 & 37188 was cut up on 24 July 2019
Harry Needle Railroad Company 3 37607 , 610 , 612 37610 & 612 hired to Colas . HNRC were originally tasked with locating and overhauling class 37s for Colas
Locomotive Services Limited 4 37190 , 521 , 667 , 688* * On long-term lease from DO5 Preservation Ltd
Network Rail 5 97301 ( 37100 ) , 97302 ( 37170 ) , 97303 ( 37178 ) , 97304 ( 37217 ) . Stored ; 37198 ERTMS fitted for Cambrian Lines
UK Rail Leasing 1 37905
West Coast Railways 11 37516 , 518 , 676 , 668 , 669 , 685 , 706 . Stored ; 37165* , 517* , 710* , 712 *Spares donors
Total 67
Fleet summary
Fleet 2020 of mainline registered locomotives ( excluding preserved railways ) . [ 25 ]
The British Rail Class 37 is a diesel-electric locomotive. Also known as the English Electric Type 3, the Class was ordered as part of the British Rail modernisation plan. They were numbered in two series, D6600-D6608 and D6700-D6999. The Class 37 became a familiar sight on many parts of the British Rail network, in particular forming the main motive power for InterCity services in East Anglia and within Scotland. They also performed well on secondary and inter-regional services for many years. The Class 37s are known to some railway enthusiasts as Tractors, a nickname due to the agricultural sound of the diesel engine of the locomotive. Despite all members of the class now being at least 54 years old, over 60 locomotives are still mainline registered and remain active undertaking a variety of passenger, freight and departmental duties on the national rail network in 2019. Approximately 30 locomotives have been preserved.