I'm in my final year at Exeter and I would say there isn't a very big party scene. You can easily involve yourself in societies and feel social without having to drink or go clubbing or go to house parties. I'd agree with Durham and Warwick (have friends at both) as well as Falmouth, Royal Holloway, and perhaps Bristol even. I would say that wherever you are you can find groups of people where the nightlife isn't top of the agenda, and usually the sort of WOOONIGHTOUT mentality starts to fizzle out after the first year when you've got to know people and you begin to just hang out and do stuff together. I would advise smaller cities with more of a campus feel, I like that I can walk through Exeter town centre at night and it is fairly quiet and there aren't people falling around vomiting.