Service areas:

Harrow Weald, Belmont, Wealdstone, Kenton, Queensbury, Edgware, Stanmore, Canons Park, Sudbury, Alperton, Wembley Central, Sudbury Hill, Harrow on the Hill, Harrow, South Harrow, North Harrow, Northwick Park, Rayners Lane, Hatch End, Eastcote, Pinner, Carpenders Park, Tokyngton, Wembley Park, Bushey, Preston, Bushey Heath, Oxhey, South Oxhey, Borehamwood, The Hyde, Elstree, Well End, Colindale, Northwood, Moor Park, Kingsbury, West Hendon, Ruislip, HA3, HA7, HA1, HA8, HA0, HA2, HA5, HA9, WD19, WD23, HA6, WD6, NW9, HA4