It also has an out-of-station interchange with Northwick Park station on the London Underground's Metropolitan line.

[9] It has only ever had platforms on the New Line; parallel main line services call at Harrow and Wealdstone station, one stop to the north, with some also calling at Wembley Central station, three stops to the south.

[citation needed] Bakerloo line services began on 16 April 1917.

[10] The closure was short-lived, and the Bakerloo line service was reinstated on 4 June 1984.

[10] The station's former coal yard on the east side of the railway, no longer needed for the trains, is now occupied by a Sainsbury's supermarket.