I do remember an American shop on The Strand, back in…2017 maybe?…that sold American sweets and boxed cereals, all the super-sweet stuff that generally isn’t available at Tesco, and it was interesting, but OOF! on the prices. I think a box of something like Cookie Crisp or whatever was trading for around $15US…and the shop was crowded.You walk along Oxford Street and there's about 20 of them.