Originally Posted by
layz
I use Curve for a similar purpose. It acts as a proxy between my (non Amex) cards and the merchant. So if the card gets cloned or stolen I just cancel my Curve and my other cards don't need cancelled. Although these days it's rare to need the physical card and using Apple Pay or Google Pay is more secure as the retailer doesn't receive your regular card details.
I still can't see what's in this for BA, is there money to be made in pre-paid cards?
There is. They make it from all the interest from the money people have deposited and not spent yet.