Possibly, in that Oyster is effectively a currency of it's own- that's going to stop with the move to a different system, but that system will still need to be run by someone, even if they are taking payments in real time rather than translating your cash into "travel currency".
Possibly, in that Oyster is effectively a currency of it's own- that's going to stop with the move to a different system, but that system will still need to be run by someone, even if they are taking payments in real time rather than translating your cash into "travel currency".