You didn't mention where in the UK you are. If you are near Birmingham, you can contact http://oxygenaccelerator.com and see if they can help you find a co-founder for your idea.

At your age you have going to university as an option and meeting people there who you may want to team up with. In the mean time I would suggest looking at the lean start-up movement to help you with the business side of things.

Good luck.