, thanks for getting in touch. You don’t need to notify us if you’re planning on using your credit card abroad. However, please bear in mind there is a 2.75% foreign transaction fee applied when using your card to purchase in another currency. You can find more information on these charges and using your card overseas here
and at tesco-bank-cc-pur-summary-box.pdf (tescobank.com)
Please be aware that exchange rates can change in the delay between your transaction being placed and your card being billed. We'll advise of all charges on your statement when produced. However, you can also visit the MasterCard currency conversion calculator
in case you need to know how much you will be paying in GBP. I hope this helps!