Personally I'd defer and go for Birmingham 2011 if you like it, since it sounds like you'd like to take a gap year, and remember that Birmingham's still a city, albeit obviously not as big as London. I don't know much about Bristol uni but the city seems lovely and not boring at all. But if you really don't want to go to any of them you could reapply next year, though remember that it's probably going to be even more competitive than this year and the grade requirements are likely to go up even further. Also, I don't think it's true you won't meet any "quirky, crazy" people in other cities, there are interesting people everywhere, you just have to find them.
For me, it wouldn't be worth it, but you should do whatever you genuinely think will make you happiest in the long run.