Re: Taller and narrower is good news
If you're buying the A8/S8 sim free, you might want to take a look at a Xiaomi Mi8, if it isn't too big. Get it via Ebay, and pay with a UK credit card, making sure its a UK seller (ie grey import). If you go for the Mi* SE it can be had for about £330, although I think it has an inferior camera to the full fat Mi8. it won't be as good as the S8, but since its half the price it is worth considering.