Ealing Common is a London Underground station on the Uxbridge branch of the Piccadilly line and on the Ealing Broadway branch of the District line. Eastbound, the next station is Acton Town; westbound, the next station is North Ealing on the Piccadilly line and Ealing Broadway on the District line. Here, the District and Piccadilly lines share the same pair of tracks through the station the only other example where a deep level line and a sub surface line share the same pair of tracks is further up the Uxbridge branch, where the Piccadilly line shares tracks with the Metropolitan line from Rayners Lane to Uxbridge. It is the only station west of Acton Town to be served by both the Piccadilly and District lines. The station is located in Ealing on the Uxbridge Road (A4020), about east of the junction with Gunnersbury Avenue and Hanger Lane (A406, North Circular Road) and the Ealing Common open space the station takes its name from. It is in Travelcard Zone 3. History Ealing Common station was opened on 1 July 1879 by the District Railway (DR, now the District line) on its extension from Turnham Green to Ealing Broadway. From 1886 until 1 March 1910 the station was known as Ealing Common and West Acton after which it changed to its current name. On 23 June 1903, the DR opened an extension of the tracks from north of Ealing Common. The extension initially reached as far as Park Royal & Twyford Abbey (closed and replaced by Park Royal in 1931), where the Royal Agricultural Society's Park Royal show grounds had been recently opened, before being opened to South Harrow on 28 June 1903. This new extension was, together with the existing tracks between Ealing Common and Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains. The deep level tube lines open at that time (City and South London Railway, Waterloo and City Railway, and Central London Railway) had been electrically powered from the start. Electric trains started running on the section of line between Ealing Common and Ealing Broadway on 1 July 1905. During 1930 and 1931, a new station building was constructed to replace the 1879 building. The new building, by Charles Holden in a style reminiscent of his designs for the 1926 Morden extension of the City and South