Firstly, may I suggest you try and see what the employment situation is like in your industry. Or are you simply looking at doing any random temp work such as catering/ retail etc? The recession has hit the UK as well and there simply aren't quite as many jobs around as there were.
Quoting Gordie80
I would contact some UK employement agencies for their advice.
UK employment agencies generally dislike the idea of sponsoring /bringing over someone from abroad, because it puts them into a tight spot legally- it's complicated so i won't dwell in it now, but basically for a UK agency to sponsor someone to come to the UK it would have to be someone at a high executive level, have particular skills, or be from a field where there are not enough workers in the UK, such as nurses. I'm sorry to say, a college graduate probably wouldn't be first on their list.
But maybe check out various exhange programs? Honestly, I have no idea what they might be, but if you are still involved with your college they might have ideas too.