I dropped out for quite a few reasons. I went to Lancaster because I wanted to go to university that year so much, even though it wasn't my first choice at all and I knew I could do so much better. When I arrived, I realised that firstly straight economics was not really what I wanted to do. But mainly, I seriously felt I could do better than Lancaster, given my past academic achievements. What was also linked to the reason I definitely wanted to leave was that I didn't meat anyone that I really clicked with. Maybe if I had found a group of friends, it might have meant I would have stayed, but definitely for the wrong reasons. It was definitely the best choice I ever made, partly because I grew up so much during my gap year but I proved to myself that I can do so much better, and I should nevr just "settle" because it was easy at the time. And that's been translated into so many things I do now.
To be honest, it doesn't sound like you want to leave UCL because of the university. During my first year, I was extremely depressed, and I actually didn't go to any lectures or tutorials for 2 weeks straight. I struggled to get out of bed, and it scared me to venture out into my hall corridors. Amongst other of course. It took me a long time to find the resources available at UCL about who could help me. There is a counselling service available, and best of all it's free. They do say they take on people first who need it the most, and I was top of the list. However, my mate at uni also used the service in her first term in first year when she was home sick. She just found it easier to talk to someone about it, because she didn't know who else to talk to about. They didn't respond to her straight away, but she emailed them again, saying she was really interested and they met up with her straight away. Maybe this is something you could look into?
Do you think it's UCL in particular you can't do for another 4 years, or your course?
I study economics and business with east European studies. It's at ssees
but I am half Russian.