If you simply want to go to Japan because you like anime and manga, going to Japan would not help your education and future career at all... because though you say you're going there for education, in reality you're there to have fun. I don't know about what England is like because I've never considered going there, but think about what you're learning and if it'll be helpful (and sounds like it does from most ppl's posts, 'cept the price XD). As for anime/manga, keep it a passion, and maybe visit Japan one day for fun, wouldn't that be better??