Check if your card charges foreign transaction fees

[Jerrywh]

Barclays Reward card and have been using this for the past couple of years.

Note no hidden charges that I am aware of. No fees and the exchange rate is calculated at the Std Visa competitive rate at the time of the transaction. This was a ‘WHICH recommended BEST BUY!!

USE THIS Credit Card for Cash Withdrawals and Purchases

Barclaycard Rewards Visa Credit Card

Which Recommended BEST BUY

ATM Cash Withdrawal Fees: NONE

Exchange Rate: Std Visa Competitive Rate

Mastercard normally gives better exchange rates than Visa.
See here: https://www.moneysavingexpert.com/news/2015/05/mastercard-vs-visa-for-using-abroad-which-wins/
It is an old article but I believe is still true..
I couldn't find any evidence on the Which? website to suggest that Barclay's reward card is a best buy... in my experience, not one of the major clearing banks can provide overseas spending cheaper than Starling or Chase..