Anon,
Why do you want to go to a different uni?
The uni that you are thinking about going to, is it near your current one?
It sounds like you have really bonded with your current friends : ) There's no reason that you can't continue those friendships!
Of course, you might not see them as much at a different university, but you could still meet on weekends or during the holidays.
Halls is a mixed bag. You will either get on really well with your flatmates, not get on well, or be pretty indifferent.
I think the main thing is appreciating that friendships can come from different places: from the people on your course, to societies that you join, to just randomly meeting people. If you are willing to get to know people, I don't think you need to worry about making new friends.
Perhaps the main thing is thinking about your reasons for switching university/your course.
What were the reasons for you doing your current course?
All the best,
Oluwatosin – 2nd year student – University of Huddersfield