For the GNP&BR, 218 cars (seventy-two motor cars and 146 trailers) were built, the order being split between Les Ateliers de Construction du Nord de la France, at Blanc-Misseron, France and Hungarian Railway Carriage and Machinery Works, in Győr, Hungary.

Two cars were also built in Britain, one by the Metropolitan Carriage and Wagon Co and one by Brush Electrical Engineering Co Ltd.

The cars, built in both France and Hungary,[2] were shipped unfinished to England where they went to Lillie Bridge depot where they were prepared for service.

Entry and exit was by the end platforms, being protected by lattice gates, and operated by gate-men stationed between cars.

Part of one carriage of the stock has been preserved by the London Transport Museum's Acton depot.