The British Rail Class 508 (4PER) was a class of electric multiple unit passenger train built by British Rail Engineering Limited, at Holgate Road carriage works, York, in 1979 and 1980. They were a variant of British Rail's standard 1972 design for suburban EMUs, eventually encompassing 755 vehicles and five classes (313/314/315/507/508).
They mostly worked on the Merseyrail network from 1982 until withdrawal on 16 January 2024.