Bank cards insttead of Oyster Cards. Oyster outside London

"TfL an train companies are also to work to complet plans to extend Oyster PAYG outside London, and to evaluate the extension to National Rail services of payment using contactless bank  cards, for introduction in 2012. TfL has confirmed that, by the end of 2012, card readers across its whole network will have been upgraded so that a contactless bank card can be used  ... for PAYG travel." [Modern Railways April 2011]