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April 1955
A pristine Derby Lightweight DMU is about to leave Keswick for Workington on 9 April 1955. DMUs were still a novelty at that time, and had only recently replaced the Ivatt Class 2MT 2-6-0s. They provided excellent viewing from the front seats. Keswick to Workington closed in 1966, but the station lingered for another six years, served by DMUs from Penrith.
Note the red lens over the lower centre marker lamp, in lieu of a tail lamp. Colin Kirkwood.

circa late May 1955
Derby Lightweight power car E79035 on display outside the Royal Festival Hall in London for the Aluminium Centenary Exhibition. To the right is a London Underground vehicle. The lack of flags on the flagpoles, scaffolding around the large signage, and the fence under construction suggests this was before the opening of the exhibition which was on the 1st June 1955. Stuart Mackay Collection.

circa November 1976
Ultrasonic Test Train DB975007 + 975008 at Old Oak Common. The slide process date was November 1976. The KDH Archive.

1982
Lancaster on an unknown date in 1982 and Test Coach Iris or RDB975010 is at work. The KDH Archive.

Date unknown
A Derby Lightweight twin heads away from the camera towards Coventry after departing from Rugby circa late 1950s. Stuart Mackay Collection.
Summary
Description
- Single cars
- Four-car sets
Drivers Instructions
Numbering
Liveries
Operations
- West Cumberland
- Lincolnshire
- East Anglia
- North Eastern Region
- North Wales
- Buckingham - Banbury
- Manchester
Non-Passenger Use
- Special Saloon
- Ultrasonic Test Train
Images
Details about preserved Derby Lightweights can be found here.