The second longest lived class of First Generation multiple units

First introduced in 1956, the last of the Class 101 multiple units was not withdrawn until 2003, 47 years after introduction. Found almost everywhere, the use of the class was notably concentrated on services in the east of Scotland, West Midlands, North East and West Yorkshire.

These DMUs could be found in two, three and four coach sets and a small number of buffet cars were built for longer distance services.

One of the most successful First Generation of diesel multiple units

When introduced these Metro-Cammell were divided into two classes, 101 and 102 dependent on whether they were fitted with a Leyland or AEC engine. As time went on they were all classified 101 as the two classes were interchanged making a hybrid unit.

Data File

Built: Introduced from 1956
Engine: M51189 AEC 52, Sc51803 Leyland 680/17
Transmission: Mechanical
Max speed: 70 mph

One of the most successful

The British Railways Class 101 two car (and 102, three car) diesel multiple units (DMUs) were designed around the Mk.1 coach body and were built by Metro-Cammell at Washwood Heath in Birmingham, England between 1956 to 1959, following the introduction of a series of DMU prototype units. The Class 101 proved to be one of the most successful and longest-lived of First Generation DMUs, the last of the class being withdrawn in 2003.

The class was primarily designed for use on both branch lines and some shorter inter-city routes and could operate at most locations around the country being allocated to all but the Southern Region. The units were also originally geared to allow them to haul a goods wagon.

The prefix letters denote British Railways regions, ‘Sc’ for Scotland and ‘M’ for Midland Region.


Classified when new 101, vehicle No. M51189 was introduced being allocated to Ryecroft depot in Walsall for local services out of Birmingham New Street.


Having an AEC engine, vehicle no. Sc51803 was designated as Class 102 and initially was based at Leith Central working services between Edinburgh and Dundee, Stirling and Dunblane.

A pair made in Haworth

Arriving in a fairly rundown state, the two vehicles which are paired together here on the Worth Valley Railway never ran together during their career for British Rail. From the rundown state that they arrived in, the Class 101 has been restored to a high standard and, on withdrawal of the Class 108, which was the first DMU to run on the KWVR, has taken over the DMU early morning turns when a 2 coach train is needed.