No offense intended, but I would have thought if you've been away from the science subjects for some time, it would be a good idea to apply to schools
with an entrance exam. At least this way if you fail the test you'll know that you're not at the required level yet (and lets face it the entrance exams are pretty straight forward from what I've heard even if you only have a passing grade at A-level) and you would have saved yourself the first years tution, accomodation, bucket loads of stress and dissapointment etc as you would probably have little chance of making it through the first year if you have not yet grasped basic Bio and Chem before starting Med-School.
The three books I would recommend are '
Advanced Chemistry', '
Advanced Biology' and '
Advanced Physics' they are all on Amazon.
They are not cheap at around £35 each, but they are worth every penny and they're peanuts in comparison with a pre-med course.The physics book is probably a lesser requirement unless you're going for Charles in Prague or another med-school which tests physics in their entrance exam. A lot of them just test Bio and Chem. I think.
PS
I have no affiliation with the 'Advanced' series of books, or with Amazon.co.uk
They are great books though, but leave yourself plenty of time to get to grips with the subjects. Remember you're not just trying to acquire enough knowledge to pass the ent. exam, but laying a foundation that all the other med subjects will build on. Org. chem, bio-chem etc
I'm yet to apply to uni, so perhaps my comments should be taken with a pinch of salt
It just seems like common sense though.