Seem to remember something about 'legal tender'. Meant you had to accept cash payment. Of course you could refuse the customer on other grounds...
Might not be a thing in the land of hipster-ish coffee shops.
Might not be a thing in the land of hipster-ish coffee shops.
[1] https://edu.bankofengland.co.uk/knowledgebank/what-is-legal-...
Nobody has to accept a jar of pennies, or a house purchase in singles, or even cash at all.