British Rail Class 315

British Rail Class 315 alternating current (AC) electric multiple units (EMU) were built by BREL at York works from 1980 to 1981. They were the fifth and final variety of British Rail's then-standard 1972 design suburban EMUs, which eventually encompassed 755 vehicles and five Classes (Class 313/314/315/507/508). Like the Glasgow-based Class 314 units, they are only able to operate from 25 kV overhead line current collection. The fleet works inner-suburban services on the Great Eastern Main Line run by the train operating company TfL Rail out of London Liverpool Street. Class 315s also did work services from Liverpool Street to Chingford, Enfield Town and Cheshunt operated by London Overground but got discontinued in 2020.

British Rail Class 315
Class 315 unit at Ilford
In service	1980 - 9th december 2022
Manufacturer	BREL York
Family name	1972 design
Refurbishment	All 61 Greater Anglia sets 2006-present
Number built	61 trainsets
Formation	4 cars per trainset
Capacity	320 seats
Operator(s)	TfL Rail London Overground
Specifications
Car length	19.80 m
Width	3.58 m
Height	2.82 m
Maximum speed	75 mph (121 km/h)
Weight	127.5 tonnes
Power output	656 kW
Electric system(s)	25 kV AC Overhead
Track gauge	Standard gauge (1,435 mm)