I think if you signed into an accoount at amazon.uk, it wouldn't matter and Mudcat would get the cut, but if you clicked out and the items were still there without an actual membership, probably not? Actually I have no idea, but I know if I sign in at amazon.us, it will keep things in my basket even after I've left the site, then the next time I go there, however I get there, they are waiting for me to purchase. Hope that is clearer than mud and someone else actually knows. it is a good question!:-)