The Class 67 locomotives are a class of Bo-Bo diesel-electric locomotives that were built for the English Welsh & Scottish Railway (EWS) between 1999 and 2000 by Alstom at Meinfesa in Valencia, Spain with drive components (engine, generator and traction motors) from General Motors' Electro-Motive Division. EMD's designation for this locomotive type is JT42HW-HS. History Design, testing and introduction EWS ordered thirty locomotives via leasing company Angel Trains in a £45 million contract split between Alstom and Electro Motive Diesel, for use as Class 47 replacements for hauling high-speed Royal Mail trains and passenger trains. The locomotives were obtained on a 15-year lease from Angel Trains. At the end of the fifteen-year contract, ownership of the locomotives was transferred to DB Cargo UK. The bodyshell is a monocoque load-bearing Alstom design, the bogies are an "H" frame Alstom design, the engine, traction motors and control electronics are GM-EMD products, and the same as used in the Class 66. Unlike the Class 66, the traction motors are frame mounted rather than axle hung to reduce unsprung mass and the gear ratio is increased allowing higher speeds. The cab design has a central driving position. The locomotives are able to provide Electric Train Supply for passenger train heating and air-conditioning, and are equipped for both buffers and chain couplers and buckeye couplers, the latter attached by a swing arm mount. High-speed running tests were undertaken with 67002 starting at Alstom's facility at La Sagra (Toledo, Spain) and running on the standard gauge Madrid-Toledo high-speed rail line. A top speed of was obtained. The first locomotive to be delivered was 67003, which arrived in October 1999. Initially plans were for a rapid acceptance into service, but problems with the locomotives being slightly out of loading gauge caused delays. Acceptance trials began in December, and all 30 units had been delivered to the UK by early 2000. The high axle load of the locomotive caused an initial speed restriction to and modifications to the bogies were required; locomotive 67023 was passed for running in July 2001, and all 30 units had been modified by June 2003. Operations DB Cargo UK The class were initially used primarily on mail trains. In June 2003 EWS lost the Royal Mail mail train contract, with services diminishing to complete cessation in March 2004. The locomotives have since been used by First ScotRail on the Caledonian Sleeper on non-electrified