Hi, I am also a student at the University of Edinburgh (doing computer science) and I absolutely love it! I found this website that could help you to choose btw, it's called unibudy. It puts you in contact with people in your universities doing the subject you're interested in, and you can ask them any questions. There are also a few posts that can tell you a little more about the lifestyle at UCL, LSE, UoE etc hope it'll help