I wonder if Butchy might be planning to drop in/hand over an envelope containing payment, thus avoiding queuing for some time or worrying about Royal Mail. In that case, surely a cheque is the best thing?
I have no idea? does anyone still use cheques?
If they did, I'd be certain they'd want a cheque guarantee card, nobody would take a cheque and no guarantee card. Do you not have any form of plastic payment card?