Service areas:

North Harrow, Harrow, Northwick Park, Rayners Lane, Harrow on the Hill, South Harrow, Kenton, Belmont, Harrow Weald, Carpenders Park, Ruislip, Wembley, Wembley Park, Queensbury, Preston, Tokyngton, Wealdstone, North Wembley, Pinner, Eastcote, Alperton, Sudbury, Stanmore, Greenford, Sudbury Hill, Hatch End, Rayners Lane, Perivale, Northolt, The Hyde, Mill Hill, Arkley, Colindale, Kingsbury, West Hendon, HA1, HA2, HA9, HA3, HA0, HA5, HA4, HA7, UB5, UB6, NW7, NW9