Operating Areas: BR (Bromley), CR (Croydon), DA (Dartford), E (East London), EC (City of London)), EN (Enfield), HA (Harrow), IG (Ilford), KT (Kingston upon Thames), N (North London), NW (North West London), NW (North West London)csv, RH (Redhill), RM (Romford), SE (South East London), SW (South West London), TN (Tonbridge), TW (Twickenham), W (West London), W21HW, WC (West Central London), WD (Watford)