Good luck with it all. Most of the research I've done regarding jobs in UK have said that a UK sponsor is the best bet, otherwise it's very difficult to find work other than bar maid or waitress. The previous advice seemed to be on the money.
I've been looking for work in Scotland for about six months and can't find a thing. Frustrated! I guess I'm in the same boat you're in -- in more ways than one. I'm in San Antonio, work closely in the entertainment field, and want to move to start a new adventure for myself. Why not if you can do it, right?
Again, good luck.