British Rail Class 370

British Rail's Class 370 tilting trains, also referred to as APT-P (meaning Advanced Passenger Train Prototype), were the pre-production Advanced Passenger Train units. Unlike the earlier experimental gas-turbine APT-E unit, these units were powered by 25kV AC overhead electrification and were used on the West Coast Main Line between London Euston and Glasgow Central. The APT-P is the most powerful domestic train to have operated in Britain, the eight traction motors fitted to the two central Motor Cars giving a total output of 8000 hp. This enabled the train to set the UK rail speed record of 162.2 mph in December 1979, a record that stood for 23 years. Due to ongoing technical problems with these pre-production units, and a lack of cash or political will to take the project forward, the planned APT-S production-series units were never built, but did influence the design of the later InterCity 225 sets designed for the East Coast Main Line electrification. The influence is strongest with the Class 91 locos which took many features from the APT powercars. The technology was later sold to Fiat and used for improving their second generation Pendolino trains which have been used worldwide, including the West Coast Main Line.

Numbering
Units were numbered 370001-370006 (plus a spare driving car labelled 370007) and were formed as follows: A full train was made up of two units running back-to-back, with the two motor cars adjoining. The motor cars had no seating accommodation or through-gangway, so the two halves of the train were unconnected for passengers.
 * 48101-48107 - Driving Trailer Second
 * 48201-48206 - Trailer Second
 * 48401-48406 - Trailer Restaurant Second Buffet
 * 48301-48306 - Trailer Unclassified
 * 48501-48506 - Trailer First
 * 48601-48606 - Trailer Brake First
 * 49001-49006 - Non-Driving Motor

Withdrawal
All six units were withdrawn during 1985-1986, and most cars were quickly scrapped. Only a handful of cars have survived;
 * 49006 is a Non-Driving Motor Car, and is at the National Railway Museum's Locomotion annexe in Shildon
 * Crewe Heritage Centre, a museum located next to Crewe station, has a rake of six cars formed into a single train:
 * 48103 - Driving Trailer Second
 * 48404 - Trailer Restaurant Second Buffet
 * 48603 - Trailer Brake First
 * 49002 - Non-Driving Motor
 * 48602 - Trailer Brake First
 * 48106 - Driving Trailer Second