As a UWE student I can safely say that it is a rubbish university. The students are great and the lecturers are fantastic, but those in charge have no ambition to turn it into a great university. Without that ambition UWE will never be anything but a bottom half table university. That being said, if you don't mind the rubbish campus you may even enjoy it there, as I've mentioned the lecturers are fantastic and if you're really driven a university isn't going to affect your prospects in the future. A slacker from Bristol is miles away from a perfect student at UWE.
Does one year really matter? If you have your heart set on Bristol/Bath then going to UWE is only going to depress you. You now have an extra year to build up your results and revise extremely hard to get the results you need. Before you make your decision have a walk around the campus and talk to some real students taking your course and ask them about it. You'll find that at the open days you'll be fed lies about your faculty, only to realise that you'll be spending your three years in awful rooms and away from the nice equipment they like to tout. It's a general rule for any university to actually talk to some students to find out how it actually feels to be a student there.