It is on the Piccadilly line between Knightsbridge and Green Park stations, and is located in Travelcard zone 1.

[6] It was the connecting station between the two original companies, the London United Railway and the Piccadilly and City Railway, who amalgamated after Parliament demanded the entire line from Hammersmith to Finsbury Park should be built as one scheme.

[7] The original, Leslie Green-designed station building still remains to the south of the road junction, notable by its ox-blood coloured tiles; it was until June 2010 used as a pizza restaurant, and since 14 December 2012 it has been the Wellesley Hotel.

The 1932 station had showcases inset to the walls that showed a series of dioramas depicting the development of the London bus – long gone, some of the scale models survive in the LT Museum Collections.

The current entrance to the station is accessed from within the pedestrian underpass system around the Hyde Park Corner junction.