I live in Manchester (still at uni actually, postgrad) and can give you a few tips. First of all, try and write for the student paper/work for the radio station. Even if you aren't interested in these things you'll end up getting free entry to gigs/CDs/interviews and whatnot for minimal amounts of work. If you wanted to start in journalism then going to Manchester is a good choice as the process for choosing an editor for their student paper is open to anyone. Get your face known and get stuck in helping out ASAP and you could easily find yourself editor in your second or third year.
There are literally hundreds of band nights/DIY gigging type scenes in Manchester. If you go up to the northern quarter and hang out in the record shops up there you're sure to stumble across something you could get involved with. It's highly competitive though so starting your own would be very time consuming. I can't remember if there's some kind of events organisation society within the Uni, but if there isn't you could try starting one. You'll get uni funding as well access to facilities to put on a night or something of that nature.
Finally, if you want to get some industry experience there are also tons of small, start-up labels you could help out at (anything from flyering to answering phones or writing press releases). I did a bit of work ex at RF Records (
www.rfrecords.com) which wasn't very helpful but it did give me a bit of insight into what working at a label/as an A&R person is like. I also got into more free gigs, which was nice. You'll want to get yourself down to In The City (
www.inthecity.co.uk), which is a showcase for new bands/industry love-in held every year in Manchester. Hassle them about helping out/work ex and you'll gain yet more valuable experience and yet more entry to free gigs (see the pattern here?).
Basically, just hang about at as many gigs/clubs/record shops as you can until you find something you can get involved with. Er, that's all I can think of really. I know not all of that was relevant but I thought I'd get as much in as I could in case your ambitions change between now and September. Good luck!