Hmmmm....people often bring this up on the forum from time to time. I'm really a jeans & T-shirt gal (and white trainers!

), and that hasn't changed when I'm at home, off work, relaxing. I also like to wear really bright colours & I think I stand out sometimes, but I'm not bothered - I just like to be myself and be comfortable.
For work, I think I did change my style to try and fit in. I wear a lot more black - that seemed to me to be a fairly standard office 'uniform' so to speak. Might depend on where in the UK you are going to live - for example, London being such a big & culturally diverse city, you're probably going to see more variations in dress? Also depends on what kind of job you're in & things like that. I think people do tend to dress up a bit more here - but I don't, lol!
I used to have pierced ears when I was young, but I went without wearing earrings so long, the holes closed up.