I have just applied for a tesco clubcard plus. It is a sort of debit card. you set up a monthly debit for the amount you are likely to spend and you get double points. The amount you put in can vary from month to month and you can also withdraw cash using your card. As I do all my shopping at tescos and have the premium clubcard rates I have worked out that just for shopping there I would be just a few thousand miles short of 2 flights to the Caribbean. Can't be bad! ( However SOME of my shopping will be done using my Amex !)