Comment by bell-cot

I don't know Britain, but in my part of America the extra costs of taking credit cards are so high that most gasoline (petrol) stations give a ~3% discount to customers paying with old-fashioned paper cash. And I know little grocery stores with signs by their register, asking customers to please pay with cash - because margins are tight, and the bank takes an X% cut of every credit card payment and a Y% cut of every debit card payment.