Many outlets in my area won’t take cards or have a £5 or £10 minimum or charge a fee to use cards.
If you are in the Braintree-Colchester area of Essex and like the idea of an Organic café that serves juices, smoothies, salads and cakes, try:
Lone Wolves Organics at 7 Market End, Coggeshall, Essex. CO6 1TP
They accept cards with No minimum and No fees.