Shashi Verma, TfL's director of customer experience, said: ''Pay asyougo Oyster cards do not expire and customers are able to return their cards to a Tube ticket office at any time for a refund of the remaining balance and card deposit.
At this point, we know that the budget surpluses of the '90s occurred in part because of the pay-as-you-go law, which said that, well, you should payasyougo and live within our means, just like families do every day.