A former station on the Piccadilly Line. It was opened 23 June 1903; closed 5 July 1931. Although on the route of the current Piccadilly line a short distance north of the present Park Royal station, it was never served by Piccadilly line trains. It was opened by the District Line, the original operator of the line between Ealing Common and South Harrow, and was closed and replaced by the present Park Royal station before the Piccadilly line started running trains to South Harrow in 1932.
The Wikipedia page is