Propelling Control Vehicle

British Rail Propelling Control Vehicle
NAA 94335 at Plymouth on 29 August 2003. This vehicle is in Rail Express Systems red/grey livery with light blue flashes.
In service	1994–2004
Manufacturer	Hunslet-Barclay (conversion)
Constructed	1994–1996 (conversion from class 307)
Number built	42
Number in service	None
Number preserved	1
Number scrapped	24
Fleet numbers	94302–94327, 94331–94345, 95300–95301
Operator(s)	Rail Express Systems, EWS
Specifications
Maximum speed	See article text
Braking system(s)	Air
Track gauge	4 ft 8 1⁄2 in (1,435 mm)

A Propelling Control Vehicle (PCV) is a type of British railway carriage for carrying mail. They were converted from Class 307 driving trailers and have a cab at one end which allows slow-speed movement control. PCVs are unpowered but the controls allow mail trains to be reversed at low speed, using the power of the locomotive at the other end of the train. Similar BR Class 91 Driving Van Trailer (DVT) used on the ECML differ by being fully equipped for high-speed train control.

Forty-two PCVs were converted by Hunslet-Barclay in Kilmarnock from 1994 to 1996. The rebuilding work including removal of the windows and slam-doors, the fitting of roller shutter doors, and modernisation of the cab. The vehicles were given the TOPS code NAA and numbered 94300–94327 and 94331–94345. The first two vehicles converted were prototypes, and were extensively tested to iron out any problems. The subsequent 40 vehicles incorporated modifications as a result of this testing. At the same time these vehicles were converted, the Class 47/7 locomotives that hauled mail trains were modified to be able to work in push-pull mode with the PCVs.

When first converted the vehicles were used by the Rail Express Systems parcels sector of British Rail. They were painted in Rail Express Systems red/grey livery with light blue flashes. PCVs were marshalled at either end of mail trains that worked into London termini, which removed the need for the locomotive to run round the train at its destination. Trains were propelled only at low speed, not for long distances.

In 1996 Rail Express Systems was sold to EWS, who continued to operate mail trains on behalf of Royal Mail. PCVs were used on trains between London and Norwich, Plymouth, Bristol, Swansea, Newcastle and Glasgow. PCVs were also used on Travelling Post Office trains from London to Plymouth, Newcastle, Norwich, Carlisle and Glasgow.