May I ask why you are interested in Medicine? Since you didn't take any science subjects at A level apart from AS chemistry I'll assume you aren't the biggest fan. I don't mean to attack you, but medicine is a really long commitment, one you basically have to continue after you've decided to do the degree (there are some people who do leave to do medical law degrees/business etc. but that's a waste of the 6 years imo). All areas of medicine require science, which is far more important than people skills and all the rest of it, and unless you're seriously dedicated in science you're going to have a hard time.
You mention money-making careers; doctors seem to have the impression of being famous, well-regarded and most importantly rich. That's really not true; certainly you'll earn decent wages, but it's going to be some 12-15 years at least after graduation before you become a consultant, and even then it's really only 70k or so. Not bad of course, but hardly millions considering the amount of low-pay work/education you need to get there. If you want money and respect there are far better career choices.