What's the best undergraduate degree to get in order to become a film / theatre director?

I plan to re-apply to uni during my gap year, predicted all A's in English Lit, Philosophy, Maths and Critical Thinking. The only thing I've ever felt pionate about is directing. Last year I applied to a number of places for English and Drama combined when I wasn't really sure what I wanted to do. I've received offers from Leeds and Birmingham to do this course and an offer from Manchester to do straight drama. The place I like most so far is Bristol but I've been rejected on account of my deferred entry. I have no idea what the best route to take is, in regard to my career choice, and whether a degree necessarily has to be vocational in order for me to get into the field I desire. Any help would be much appreciated!