Any suggestions for clothes available in the UK or EU which are at least hard wearing?

So I'm sick of supporting fast fashion and could really use some new clothes, especially jeans. I was inspired by the work wear post earlier however I think all the recommendations were US based which aren't that useful for me in the UK. Any suggestions for brands or shops where I can get something which will last? I don't mind paying significantly more for good quality if it's actually good and not just a brand logo.

EDIT: Thanks for all the suggestions everyone I'll have a good look at these.