 The route diagram on the station wall in the disused tube station  where Q introduces Bond to the new Aston indicates that the station  is on the Piccadilly line and that the next station is Hyde Park  Corner followed by Knightsbridge etc. Reference to the current tube  map suggests that this station is Green Park (the station before  Hyde Park Corner). However there is a real disused station on the  Piccadilly Line between Green Park and Hyde Park Corner. It was  called Down Street and was closed in the 1930s. It was used during  the war as a temporary Cabinet War Rooms, and later by the Railway  Executive as offices. Even today, much of the internal  infrastructure is complete, but it could not be used in the way  shown in the film because, although the station is closed, the  tracks through it are still in normal daily use by Piccadilly line  trains.