The following stations are inside the Oyster zonal system, but special fares apply: Contactless-only The London pay-as-you-go system continues beyond the zones. Due to technical limitations with Oyster cards, they are not valid and only contactless payment cards may be used. Contactless-only PAYG is valid out to , , and . The following stations are contactless only: Changes January 1997: Debden and Theydon Bois moved from Zone A to Zone 6, Epping moved from Zone B to zone 6 and Moor Park moved from zone A to zones 6 and A January 1998: Amersham and Chesham moved from zone C to zone D January 2004: Watford moved from zone B to zone A January 2008: Zones A (Croxley, Rickmansworth and Watford) and B (Chorleywood) merged and renamed zone 7. Zone C (Chalfont & Latimer) renamed zone 8. Zone D (Amersham and Chesham) renamed zone 9. January 2010: Chafford Hundred, Grays, Purfleet and Ockendon added to system in new zone 'G'. Watford Junction added to system in new zone 'W'. January 2013: Theobalds Grove and Waltham Cross added to system in zone 7. Cheshunt added to system in zone 8. Brentwood and Broxbourne added to system in new zone 11. Shenfield added to system in new zone 12 May 2015: Brentwood moved from zone 11 to Zone 9 September 2015: Dartford added to system in zone 8 October 2015: Rye House, St Margarets (Hertfordshire), Ware and Hertford East added to system in zone 11 January 2016: Merstham, Redhill, Earlswood, Salfords and Horley added to the system in new zone 13. Gatwick Airport added to system in new zone 14 March 2016: Swanley added to system in zone 8 February 2019: Epsom added to system in zone 9 (although the zone isn't publicised) April 2019: Cuffley (zone 9 but not publicised), Bayford (zone 11) and Hertford North (zone 11) added to system August 2019: Potters Bar and Radlett added to system in zone 11 - the last stations to get Oyster August 2019: Brookmans Park added to system (contactless only) October 2019: St Albans, Harpenden and Luton Airport Parkway added to system (contactless only) November 2019: Welham Green, Hatfield and Welwyn Garden City added to system (contactless only) January 2020: Burnham, Iver, Langley, Maidenhead, Reading, Slough, Taplow and Twyford added to the system (contactless only) March 2022: Henley-on-Thames, Shiplake, Wargrave and Windsor & Eton Central added to the system (contactless only) May