My Nationwide credit card has zero commission for foreign currency and also gives me 0.5% cashback. I also take a Halifax Clarity card which is zero commission. They’re both Visa so I take an MBNA Mastercard “just in case”. That also gives cashback, but charges a currency fee.
Nationwide Debit Card for cash withdrawals via ATM.
Always always always press the Euro option if offered a conversion option by the card machine.
My phone defaults to my Nationwide CC and it’s been accepted for about 80% of all transactions.
I usually carry a bit of cash but I’ve only used it for buskers and local markets.
This year I’ve used these methods in Canaries, Western Sahara, Morocco, Spain and France with not one issue. I’m a bit concerned it might not be quite so simple next week in Wales though.