Coupling code: Blue Square
Underframe: 64ft 6in
Engines: Leyland Albion 230hp
Four cars were built for the LMR (non-gangwayed) and six for the WR (gangwayed). They would also later work on the ER.
Fitted with 2 x 230hp Leyland Albion engines this made them very powerful for a 40/41 ton single car unit. They had a payload of 10 tons, and could take a tail load of up to 64 tons.
These cars, along with the three Cravens parcels units, enabled a through parcels service to be provided where there was not a regular passenger service, or where station times were not sufficient to permit the loading and unloading of mail from regular passenger services.
Blue square multiple working allowed them to be coupled to most other DMUs.
The last cars were withdrawn in 1991.