Get contacts to other people in your local/nearly local electronic music (dont be snobbish unless you really want to) scene, play opening slots to them, drink beers with them, whatever. I've always believed that good things happen to good people and people tend to remember people who are fun to hang around with.
I picture that in UK it wouldnt be too hard to get involved with people. YMCA shows and traditional pub shows to pub crowd or something sound weird to me but then again things are different in every country..also if something wont happen now, next year you're 18 and ready to go to play at least some venues, right? But if would have only one thing to say, I would say the key to get gigs is to know people, key to get your music listened, thats a lot harder/random thing.