Model of a BR Mk.1 design BG gangwayed full brake coach with guards' office and hand brake in service with one of the BR engineering departments.
The railway engineers departments were divided into areas of specialisation, principally mechanical (locomotives & rolling stock), civil (track and infrastructure) and signal & telegraph (signalling and communications). Each department used spare coaching stock for a range of purposes, from moving stores to mobile workshops. Vehicles fitted with hand brakes were the first choice as these coaches would often be stored during the week and these vehicles could also be used as both barrier coaches and asĀ guards' vans for moving other vehicles between depots and repair works.