Hi
The banks Starling and Monzo, are offering to current account holders spending overseas using their debit cards, various offers.
Starling & Monzo Bank makes no charge for spending £100 in a shop/restaurant
Starling Bank makes no charge for withdrawing £100 cash
Monzo Bank allows £200 cash withdrawal every 30 days with no change.
Tandem Bank offers a credit card with no charges for purchases or cash withdrawals abroad.
All the above banks operate via a telephone app and do not offer internet/ telephone banking, and have no branches.
Metro Bank make no charge for spending £100 in a shop within Europe and charge £2.75 outside Europe. You can also withdraw £100 in cash for free in Europe and £4.25 outside. This is for both debit and credit cards.
Check out their web sites for full details and financial safeguards etc
Geoff