Have you thought about the Self Sponsored route? It is expensive but there are banks out there that will lend you the money, I know several guys who gone about it this way.
Another bonus to it is that you are a free agent at the end of the day and will earn more than the BA sponsored students when you get your first proper job. There are lots of tales on Prune about people who have been this down this route,its hard but hey lifes a bitch, keep your chin up and find another way.