B Barking Barnet C Chessington Croydon E Edgware G Green Street Green Greenford H Harrow Hornchurch I Ilford K Kingston upon Thames L London M Mitcham O Orpington P Pinner R Richmond Romford Ruislip S Sidcup Sunbury-on-thames Surbiton Sutton T Teddington Twickenham U Uxbridge W Wallington Wembley West Wickham