British Rail Class 456

British Rail Class 456
South West Trains Class 456 approaching Guildford
Interior of a South West Trains Class 456 after refurbishment
In serviceSeptember 1991  17 January 2022
ManufacturerBritish Rail Engineering Limited
Built atYork Carriage Works, York
Family nameBR Second Generation (Mark 3)
Constructed1990–1991
Refurbished
Scrapped2022
Number built24
Number scrapped24
SuccessorClass 377 (Southern)
Formation
  • 2 cars per unit:
  • DMSO-DTSO
Fleet numbers456001–456024
Capacity152 seats
OwnersPorterbrook
Operators
Depots
Specifications
Car body constructionSteel
Car length19.95 m (65 ft 5 in)
Width2.82 m (9 ft 3 in)
Height3.78 m (12 ft 5 in)
Doors
  • Double-leaf pocket sliding
  • (2 per side per car)
Wheelbase
  • 14.17 m (46 ft 6 in)
  • (over bogie centres)
Maximum speed75 mph (121 km/h)
Weight
Power output500 hp (373 kW)
Electric system(s)750 V DC third rail
Current collector(s)Contact shoe
Minimum turning radius71 m (232 ft 11 in)
Braking system(s)Air (Westcode)
Safety system(s)
Coupling systemTightlock
Multiple workingWithin class, and with Class 455
Track gauge1,435 mm (4 ft 8+12 in) standard gauge

The British Rail Class 456 was an electric multiple unit passenger train introduced by Network SouthEast on inner-suburban services in South London to replace the elderly Class 416 2EPB units. Twenty-four two-car units were built by British Rail Engineering Limited's York Carriage Works in 1990 and 1991.

Following the privatisation of British Rail, the fleet was sold to Porterbrook and operated by Southern up until late 2013, when they were transferred to South West Trains and heavily refurbished. Routes that were operated by Class 456 units will be operated by new Class 701 Bombardier Aventra units in the future.