Check on the uni’s sites for room and board costs, some schools are cheaper (maybe 8-10K, some more) but you are going to need accommodation during vacations also. Again, full rides are not common at all. Full tuition still leaves you with living costs. You pay to live at a UK uni, you pay for food and board. You will not get a loan in the USA. You will be financially, persona non grata, you will have at best, a student visa, no credit and no job. No one will lend you money.