Fare zones 7–9 are ancillary zones of the Travelcard and Oyster card fares scheme managed by Transport for London, used for calculating fares from some stations outside Greater London that are not in zones 4, 5 and 6. Travelcards are available on Oyster with validity in these zones. Stations in these zones are typically more than from Piccadilly Circus. Additionally, Fare zones A–W (or 10–14) are further unpublicised zones for stations where Oyster card is accepted, fares are set by National Rail, but the full range of zonal ticketing is not available. Compared to the full concentric rings of zones 1–6, these zones form patches that extend into Buckinghamshire, Essex, Hertfordshire, Kent, Surrey and West Sussex.
Background
Fare zones 1, 2, 3a, 3b and 3c—covering all London Underground stations in Greater London—were established on 22 May 1983. Seven stations on the Central line and eight on the Metropolitan line that were outside the boundary were not included in the zones.