I am also interested to know. I know funding could be a real problem, because you only get four years of tuition fees after your undergrad? As you know Imperial's GEM is now 5 years, so you would have to finance the first year yourself. I am not so sure though.
I really want to do GEM at Imperial, but financially it doesn't seem possible.
If you find out more about this, please update us. Thanks and good luck!