Im sixteen and I will move to college outside of my country alone.

I got into a college in london, i dont live in london but i live in the uk. i havent told anyone i applied or that i even got in but i need help with the living situation. from what im seeing the cheapest rent is £250 per week. that is a lot of money considering i will have to be paying at sixteen. my mother doesnt have that kind of money and my father isnt on the scene. i will get a job when i am out there, theres no doubt about that but i am wondering if its even possible for me to be able to afford that with a job, that seems like a lot of money per week. this is my dream so i really want to achieve it and i am not giving up so easily.