In addition to having the largest station, Mount Pleasant also houses the car sheds. These are situated at a slightly higher level than the running lines, to which access is by a 1 in 20 incline. Entry of the vehicles to the station at safe speeds is ensured by an electrically operated cam-shaft device. The depot is equipped for the overhaul and repair of the rolling-stock, and is provided with inspection pits and three turntables, which, although not normally brought into use, can serve as reversing loops when required. The live rail does not enter the shed, vehicle movements being controlled by an overhead trolley system to which flexible electric couplers are attached.
Shunters can also walk alongside a train and control it by a press-button device.
A circular vertical shaft is situated at one end of the depot, the purpose of which is to admit the entrance of new rolling-stock, this being a characteristic example of thoroughness in providing for a contingency that by its nature can arise only on rare occasions. One may incidentally recall that the City and South London was in its earlier days equipped with a car lift for bringing the vehicles to the surface so as to reach the sheds and repair depot at Stockwell, while when a car on the Glasgow Cable Subway requires overhaul, it has to be slung up to the workshops on a crane. A typical example of the conveyers used is at Liverpool Street, where traffic is interchanged with the London and North Eastern Railway terminus. The mail bags are handled through platform hatches, as at Paddington, but double-spiral chutes serve here as intermediaries between platform and conveyer. The lay-out here necessitates that the conveyers should at one point change both in the horizontal and vertical direction, and they are therefore constructed in two parts, connected by chutes and gearing.