 The total roster required 114 of 126 available M cars, 93 of 97 T, 3 of 6 ABM, 4 of 6 AM, 13 of 15 BT but only 19 of 32 D.

General Electric traction equipment was fitted to the trains, of the same type as that in the Tait trains and enabling the trains to be operated in mixed sets using multiple-unit train control.Six Swing Door M cars were converted to parcels vans (numbered 10CM to 15CM), and two M cars, 156M and 113M, were modified for use as shunters in the Jolimont Workshops.From the late 1950s to 1970 the swing door trains were replaced by the Harris EMU trains.