Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

My bank often blocks my card during purchases - what is the most reliable bank card? (UK)
Having worked in the financial industry, I can say 9:10 times a card is blocked, it is not actually the financial industry, but a credit/credit card monitoring service like "Falcon" for VISA. If you have not added travel notes or similar, they will decline large, our of country purchases as a way to protect you, from what is most likely fraud. Imagine if you were living in Sweden and making regular steady purchases, then all of a sudden, without warning your card was used in Spain. This would look suspicious on paper, even it was obvious to you.  This is less to do with your financial institution, and more to do with increased fraud prevention. Call your bank. They will help you.