[1] Part of the site is now being rebuilt to stable Class 701 electric multiple unit trains for South Western Railway (SWR).
Plans were therefore made for a hump marshaling yard and motive power depot at Feltham.
[5] The yard was completed in 1921 and incorporated two gravity shunting humps and equipped with the latest automated technology including electrically operated points, and widespread use of track circuits.
In the late 2000s, the site was proposed to be used as a train depot for the Heathrow Airtrack project, given its location close to Staines.
[9] Following the financial crisis, Airtrack was cancelled by the British Airport Authority in 2011 due to lack of funds for the project.
The depot will stable ten 10-car Class 701 EMUs serving the Waterloo–Reading line, as well as providing facilities for traincrews.