i live in the north east and im going to london for my foundation at byam shaw UAL. my 6th form college do a foundation, and although they do have a 100% rate, there are barely any facilities, the studio is packed and noisy as it is shared with a level students. also, all the teachers already know me and like me, so i felt i wouldnt be pushed and i wanted more of a challenge. also if i change my mind about being in london, i can make a good choice at degree level, rather than trying to transfer for the second year of a degree course.
financially, yes it is hard. my accomodation alon is £5,500 in halls as i was given a 51 week contract which i didn't want. then theres living expenses, transport etc on top of that. my parents said they'll pay for accomodation but i am having to pay living expenses for myself. remember also that a foundation course is classed as 'further education' not higher education, so no grants or loans, but if u get ema you can still get it for this year. most foundation courses are free for under 19s which is very good, so u'd only have to pay for materials to.
I do think it is a lot to pay, but i believe that a foundation course in london will prepare your portfolio for degree interviews much better, and the teachers at ual have an idea of what you need to get to a degree at ual which is helpful, i don't know if ur considering doing your foundation at ual, but there are plenty more places in london that offer one.
hope this has helped a bit! best thing to do is write a list of pros and cons and see which wins :P xx