Historical:

Commer was a British manufacturer of commercial vehicles which existed from 1905 until 1979. Commer vehicles included car derived vans, light vans, medium to heavy commercial trucks, military vehicles and buses. The Commer brand was exported widely, with examples, albeit collectors' vehicles, still running far from the UK manufacturing base. Commer designed and built its own diesel engine for its heavy commercial vehicles.

Info: Commer Commando Crew Bus – Royal Air Force, 1947-1957