Don't know a single other gay person!

I'm a 17 year old homo (in the closet to family but not to friends), I live in a normal sized uk town, population of about 45k, and I don't know a single other gay person! Probably a question asked before but, how do I find other gay people around my age?Because even just having a gay friend would help. I've come to the conclusion that if I want a bf I'll have to wait till go to uni in the closest city, but that's still a while away.