Hi MariahS
It's not clear from your posts as to if you've researched more into this and further to what bookgrl mentions, you may well find there isn't an 'automatic' job at the end of your study. Many of my family are medical professionals in India, UK, USA and Canada and certainly on this forum I've mentioned about the way some of my cousins and their friends have been treated and what they've observed as well as their experiences. The NHS will 'prefer' Doctors that are already qualified and with plenty of experience so that shortfalls in numbers from domestic UK candidates can be filled. I think it's the same with Nurses as well too. I'm not saying this is the 'only' thing they do, but it is prevalent.
Can I ask what the reason is you'd want to study Medicine here as opposed to the US? As you are a foreign student, I'm fairly sure you'd not have access to public funds/grants etc like a UK candidate would potentially be, so you'd need to take out loans etc to pay for the course and your living costs. Also, overall, medical knowledge isn't as advanced as it is in the US.
Rubydamselfly - You are right in that medical people do transfer between countries etc, however it's much more difficult than you appear to know of! My cousins friends who were fully qualified and with 5+ or 10+ years experience, came to the UK in search of work and were asked to work for free and then not given jobs at the end of their time here and thus they returned back to India. My cousins were lucky, one was offered work right away as the UK at the time had a dire shortage of anesthetists, and his wife who is a pathologist, didn't get paid work for around a year or so - she worked for a year unpaid. They've now both left the UK and are now in the US where they'll remain after sitting tough US examinations to satisfy the USA medical requirements that they're worthy. The public sector is getting squeezed in terms of investment and funding and the NHS isn't immune. Jobs will be more scarce etc whilst over the medium to long term future the UK fixes it's debt problem.
MariahS - overall, I'd suggest either staying within the US to study for medicine, or, look to other countries where you could train and have better chances of securing a job at the end of your training / course. Do research more into the UK though, I know the above sounds doom and gloom, but perhaps if you were to choose a field of medicine in strong demand etc, it may be easier etc.
Cheers, DtM! West London & Slough UK!