Piccadilly line
In the early 1930s, the London Electric Railway, precursor of the London Underground and owner of the District and Piccadilly lines, began the reconstruction of the tracks between Hammersmith and Acton Town to enable the Piccadilly line to be extended from Hammersmith to Uxbridge and Hounslow West (then the terminus of what is now the Heathrow branch). The inner tracks at Ravenscourt Park were designated for the Piccadilly line between the stopping lines of the District line. Services on the Piccadilly line began running through Ravenscourt Park on 4 July 1932.