Originally Posted by PrivatePilotDR40

Correct, I have a Virgin Credit Card (the Premium One) and Used Curve to pay AMEX Card Balance and was hit with a significant 5% fee. I have done a test transaction using Curve paying AMEX which then charges Barclaycard Avios to see if they charge a fee. Im waiting for it to clear and process. So far in the last 3 years of doing this aka paying amex with curve with a Credit Card under lining Virgin is the first for me to charge a fee.