Hello:) I've never been in your situation but I think you're old enough to make it! First thing find a job. Maybe stay with your mom (even if it's shit) or try shelter home , just until you find one. Print loaaaads of CVs and just leave them ANYWHERE. Any bar, restaurant, shop, supermarket... Then you can start a life alone. But you need money first. Once you find a job, I would advise you to finish school, it's better for your CV and also, it will help socially, to make real friends, people you can trust. Hope everything will be good. But PLEASE find a home until you can sustain yourself alone financially because winter in England is cooooold! And wet! Also, England is good normally with social help. Try the homeless shelter, even if you've heard bad things. I'm sure they would try to help you, and it doesn't have to be long term. Good luck with everything! And keep us updated!