1. As a Travelcard Season Ticket valid for 1 or more London Fare Zones. This can be used for travel between any National Rail station within the Zones and Dates for which the Oyster Travelcard is valid. Please note that the London Fare Zones Area boundaries on Chiltern Railways are West Ruislip and Amersham.
2. As pre-payment for any journey on London Underground, London Overground, London Buses, London Trams, Docklands Light Railway, Thames Clippers and, within the Oyster Pay As You Go area, National Rail. On Chiltern Railways Pay As You Go can be used between Amersham and London Marylebone and between West Ruislip and London Marylebone inclusive (and all intermediate stations).
Oyster Pay As You Go can NOT be used to pay for any other journeys on Chiltern Railways. Tickets for journeys using Chiltern Railways services, to stations other than those mentioned above, must be purchased before boarding the train, unless no ticket purchase facilities are available. Penalty Fares apply.
You can purchase an Oyster Card and the full range of Oyster products at the Chiltern Railways ticket office at London Marylebone.
Full details about Oyster Cards, along with online sales, are available from Transport for London.