Ruislip Depot

Ruislip depot
	The London end of Ruislip depot, showing the train cleaning shed in the centre. 1992 Stock is stabled on the sidings, and departmental stock is stabled at the top left.
Location
Location	Hillingdon, United Kingdom
Coordinates	51°33′50″N 0°25′30″W / 51.564°N 0.425°W
Characteristics
Owner	London Underground
Type	Tube stock
History
Opened	1948

Ruislip depot is a London Underground traction maintenance depot on the Central line, and is situated between the stations of Ruislip Gardens and West Ruislip in the London Borough of Hillingdon. The depot is accessible from both ends, and was built for the Central Line extensions under the 1935-1940 New Works Programme. It was nearly completed by 1939, when the outbreak of the Second World War prevented further work. It was used as a factory for anti-aircraft guns during the war, and was finally opened in 1948. The main car shed has 16 tracks, and there is also a three-track car cleaning shed.

In 1969, a flash butt welding facility was constructed at the depot, to enable welded rails up to 600 feet (180 m) long to be produced. At a similar time, extra sidings were installed on land to the south of the original buildings, one of which provides a link to the Piccadilly Line and Metropolitan Line tracks to Uxbridge. Since Automatic Train Protection and Automatic Train Operation systems were installed on the Central Line, the depot has also hosted a unit of 1960 Stock which is privately owned by Cravens Heritage Trains.

Part of the depot was retrofitted with a green roof in 2012, as a trial for a larger-scale rollout across London Underground. The scheme was monitored by the University of East London.