Caseking.de (owned by Rivean Capitol) which owns OCUK has their cheapest XT at €869 (£749) but Mindfactory.de have them at €799 (£688)
Scan in turn is matching EU pricing but changing the symbol from '€' to '£'

So OCUK's prices are good but not the best.
Question is, what sort of value are these? I have a RX6800 which I paid £499 on or about launch day in 2020 before everything went bananas and the 7900 XT will give 30%+ improvement @ 1440 and a bit more with RT enabled. Better value I think than an Nvidia 4070 (Ti) unless you need RT but would you spend more that £600 on a card with less than 16GB Vram in 2023?