In 1955, Metropolitan Cammell produced its first lightweight diesel multiple units, the prototypes of what were to become British Rail's most successful and longest-lived First Generation DMU type, the Class 101.
None survived, however in 2024 class 101 DTCL number 56062 was cosmetically converted to represent one of the lost "yellow diamond" Met-Camm lightweight sets. This involved fitting of a lower bufferbeam steel valance, false waist height jumper cable sockets below the cab windows and modified battery box covers. At this point, the vehicle's identity was changed to 79263.
It is planned for class 101 DMBS 51228 to undergo a similar cosmetic conversion whilst out of traffic for bodywork overhaul. This will produce a matching 2-car set.
