The A Stock cars were built for the District Railway by Brush Traction in 1903.

Trains could be split into shorter consists, dependent on the location of the central driving motor.

In addition to the end gates, all cars had centrally located hand operated passenger doors.

[1] Later, some trailer cars were equipped with driving controls in a half-cab at one end enabling shorter trains to be operated.

[3] The last car was withdrawn in 1925 and no examples passed to the London Passenger Transport Board.