Not to put the fear of God into you or anything, but man are you gonna have your work cut out for you. I got 3A*s, 6As and a B (physics), Three As and a B (Chemistry) at AS and I'm now studying Biology, Chemistry and German. I'm pretty good academically, but obviously so many people apply to medicine with incredible results and predictions. A lot of emphasis is placed on academia, because I stand out from the crowd with work experience - yet all I have to show for it are three rejections from the four med schools I've applied to (one has yet to respond). There's no bitterness there, I'm going on a gap year to work in a hospital in Germany and finally study there; but the English system chews up applicants and spits them out if they don't have straight A*s.