How much money is needed for uni?

I don't want to take out a student loan but I do not know how much money is needed for university...Im thinking 50k if you live out...(London universities are the ones I'm interested in) I have 2 years until uni and I know it's not enough time but i think maybe if I receive scholarship and grant money abd money I saved will leave me with a lot less debt..... Anyway I really just wanna kno how much money uni costs, including books and livin out costs, and the total amount without living out....