London Underground ticketing destinations and most interchange stations are in zone 1, meaning that most journeys over similar distances will cost the same. A few stations in the north east of the network, on the Central line, outside Greater London (in the Epping Forest district) are in zones 4, 5 and 6. In the north west of the network, on the Metropolitan line, zones 7, 8 and 9 (formerly A - D) cover stations outside Greater London including Amersham and Chesham in the Chiltern district of Buckinghamshire. Unlike the lower numbered zones, these ancillary areas do not encircle the capital. Some stations are
Economy of the London Borough of Croydon Economy of the London Borough of Croydon Croydon, located in Greater London, England, has a diverse economy with the service and retail sectors now dominating over the town's historical market status. It is today served well by its extensive rail network centering on East and West Croydon stations, from where London Overground, First Capital Connect and Southern operate to most parts of Greater London, Surrey, Sussex, Hampshire and the East of England. With the A23, M23 and M25 orbital motorway intersecting Croydon to the South East, it is the principal gateway of the motorway network from the East Sussex area