The OP is right, he doesn't actually have a chance at getting into medicine in the UK.
Yes, most medical schools have minimum requirements of 6A grades, however these are MINIMUM REQUIREMENTS!! Everyone here is trying to butter you up, but the harsh reality is that most applicants will have much stronger grades.
However, this is not the end of the road. There are thousands of courses out there, and with nearly straight A's your options are very much open.