List of British Rail diesel multiple unit classes

This is a list of British Rail diesel multiple-unit train classes.
For a historical overview of diesel multiple unit train development in Great Britain, see British railcars and diesel multiple units.

Pre-nationalisation designs

First generation

Early BR DMUs (79xxx series)

Manufacturer	Engines	Transmission	Type	Built	Quantity	Withdrawn	Notes	Image	Scrapped
BR Derby 'Lightweight'	2 × Leyland or 2 × AEC	hydraulic or mechanical	low density	1954-1959	217 vehicles	1967-1969 1977-1994			215
Metro-Cammell 'Lightweight'	2 × AEC	mechanical	low density	1955-1956	36 sets	1967-1969 1981			All
AC Cars Railbuses	1 × AEC	mechanical	railbus	1958	5	1968			3
Bristol-ECW Railbuses	1 × Gardner	mechanical	railbus	1958	2	1966			All
Park Royal Railbuses	1 × AEC	mechanical	railbus	1958	5	1966-1968			All
Waggon and Maschinenbau Railbuses	1 × Büssing	mechanical	railbus	1958	5	1966-1967			1
Wickham Railbuses	1 × Meadows	mechanical	railbus	1958	6	1966 1997			5

Diesel-electric multiple units (DEMUs)

Southern Region DEMUs

Class	SR code	Built	Quantity	Withdrawn	Image	Scrapped
Class 201	6S	1957-58	7 × 6-car sets	1986		About 5
Class 202	6L	1957-58	9 × 6-car sets	1986		About 8
Class 203	6B	1958	7 × 6-car sets	1990		5
Class 204	2H/3T	1957	4 × 3-car sets	1987		About 3
Class 205	2H/3H	1957-62	4 × 2-car and 29 × 3-car sets	1992–2004		About 21
Class 206	3R	1964	6 × 3-car sets	1979		All
Class 207	3D	1962	19 × 3-car sets	1990–2004		About 16