After serious thinking Andrew wrote :
A tad extreme surely.

Have you never spent 10p in cash?

And does anything cost as little as 10p ?, curious.

Yes, but I have forgotten what the item was. Long ago I had enquired in
the shop, did they prefer cash or card payment, the reply was card -
quicker and they don't have to count or take cash to the bank. I then
asked if there were a minimum amount they would accept via a card and
the answer was no, it makes no difference to them, how small the
amount.

Since when, I use contactless card, but only when I forget my Iphone -
for near every penny I spend. I'm not worth robbing, I only ever have
at most a fiver on me in cash.

My guess - gone are they days when the retailers paid for card use on a
transaction by transaction basis, so they must pay by some other method
for the service. There is only one place I can think of, which doesn't
accept card payments and that the local chippy. When we have F&C's, I
have to go to an ATM for funds first.