Oyster is a smartcard which can hold pay as you go credit, Travelcard and Bus & Tram Pass season tickets. Use it to travel on bus, Tube, tram, DLR, London Overground, TfL Rail, Emirates Air Line, River Bus services and most National Rail services in London.

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Avoid card clash

If you keep your Oyster card in your wallet/purse with your bank cards, you might occasionally see a red light when you touch it on a card reader at stations and on buses. The red light means you haven't paid for your journey and if you're at a ticket gate, it might not open. This can happen even if you've got enough pay as you go credit, a valid Travelcard or Bus & Tram Pass on your Oyster card because you could be experiencing 'card clash'.

How to avoid card clash.

Buses are cash free

You can't pay for your bus fare with cash. You can use contactless or Oyster to pay as you go - the single adult fare is £1.50. You can also use a Travelcard or Bus & Tram Pass.

Contact Oyster

Phone detailsPhone: 0343 222 1234
Textphone: 020 7027 8511

TfL call charges
08:00-20:00 seven days a week


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