Horrible beaches, cold sea, no AI or big hotel pools, rubbish food, no usual gift shops and restaurants along the beach like in real holiday places
This is just daft. I like Tenerife, particularly the middle and north parts.
But the UK has stunning beaches. Granted the water is cold. The Gower peninsula has already been mentioned, much of Cornwall, the Northumberland coast, the West coast of Scotland, the Hebrides.
There is a fair amount of decent food in the UK, not always cheap but good.
There are definitely gift shops in every UK tourist site, not always selling tat.
There probably isn't Al, I don't know and there aren't big outdoor pools. It obviously has UK weather but the beaches themselves are amongst the best in the world.