British Rail Derby Lightweight
| British Rail Derby Lightweight | |
|---|---|
 Derby Lightweight power car no. 79018 on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event. This vehicle has been restored to its original condition using a grant from the lottery heritage fund, and is preserved at the Midland Railway Centre. | |
| In service | 1954-1969 |
| Manufacturer | BR's Derby Works |
| Number built | 219 vehicles |
| Formation | 1, 2 & 4 Car Formations |
| Operator(s) | British Rail |
| Specifications | |
| Maximum speed | 62 mph |
| Prime mover(s) | Two BUT (Leyland) 125 bhp |
The British Rail Derby Lightweight diesel multiple units, were the first such trains to be built en-masse for British Railways. The units were built at BR's Derby Works from 1954 to 1955. The units were built in various formations, including two single car units, 12 power-twin 2-car units, 84 power-trailer 2-car units, and four 4-car units. Contemporaneous with these units was the unique Battery Electric Multiple Unit.
