List of British Rail electric multiple unit classes

This article lists every electric-powered multiple unit allocated a TOPS classification or used on the mainline network since 1948, i.e. British Railways and post-privatisation.

British Rail operated a wide variety of electric multiple units for use on electrified lines: These use solid state switching devices (thyristors and transistors) and have electronic power control.

The DC electric network around Tyneside had been de-electrified by the time TOPS was introduced, and the stock withdrawn or transferred to the Southern Region.

A new generation battery EMU (called an Independently Powered Electric Multiple Unit) was created in 2014, converted from a Class 379.

For this reason, London Underground, South Yorkshire Supertram and Tyne & Wear Metro trains have their own TOPS classes:

4Sub unit no. 8143 at the National Railway Museum
Gatwick Express Class 489 unit no. 489110 at London Victoria
Island Line Class 483 unit no. 483004 at Smallbrook Junction
South West Trains Class 455 unit no. 455713 at Wimbledon railway station
Southeastern Class 466 unit no. 466018 at Bromley North railway station
Merseyrail Class 507 unit no. 507009 at Liverpool Central railway station