Can't remember when I actually did.
I nearly did today for a locker at the swimming pool. In the end I was directed to a different changing room which didn't need money (20p) for the locker.
Recently I've found that there are trolleys loose and so no £1 required for slots.
I was only wondering yesterday when the default flipped from "cash only" to "card only".
I have a new debit card and need to activate and worried I'd forgotten my pin.