Hello, I am new here, I was investigating but I do not know where to write exactly my question. Please move it if I made it wrong.
My question: I want to buy crypto from the UK, first I need to change GBP , what is the place where you can trust and that does not share to many info to other countries etc?
Is it for example is pay.circle.com good? I do not know where to start to not to loose my money, Thank you. What is the best and the most popular where you can for example make a transfer legally from the UK bank?

Thank you for your help. I mean BTC Exchange , and based in the UK?