The APT-P was unveiled to the public on 7 June 1978 and continued to be used for testing into 1986. 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 Ferroviaria and used for improving their second generation Pendolino trains which have been used worldwide, including the West Coast Main Line as the Class 390.
Numbering
Units were numbered 370001-370006 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.
Withdrawal and preservation
All six units were withdrawn during 1985-1986, and most cars were quickly scrapped. The remaining cars are exhibited at Crewe Heritage Centre, a museum located next to Crewe station.
Of these, six cars are 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
A single Non-Driving Motor car does not form part of the train and is exhibited separately:
In 1980 Hornby Railways produced a OO gauge 5-car set model available as a train set with plain yellow fronts. Which was released as a 5-car train pack with black fronts and window surrounds in 1981. From 1981 the train set was produced with black fronts and window surrounds. Until appearing in the 1983 catalogue when the train set was last produced until 1984 when it was discontinued from the range. The train pack was produced until 1984. However it was featured in the 1985 catalogue although no new models were produced that year. In 2020 Hornby Railways announced that as part of their centenary year range a newly tooled OO Gauge model of the BR Class 370 Advanced Passenger Train would be launched. The APT-P will be available as part of a five-car train pack consisting of sets 370 003 and 370 004 with plain yellow fronts included are DTS, TFB, NDM, TFB and DTS and a seven-car train pack included is the APT U Development coach, consisting of sets 370 001 and 370 002 with DTS, TBF, NDM, NDM, TBF and DTS in APT livery with black front and window surrounds with the additional SKU' coaches available separately in eight sets of two including TS, TU, TRBS, and TF with the additional NDM and the APT U Development coach, for each set to form a realistic complete full rake train for both train packs.