Help with A-level Choices

Are you on the new system and taking all five to the full A level?

Okay, first of all, the main requirement for medicine is usually studying chemistry to A2, which you are doing. However, I think many courses also require biology, and therefore it would be useful to have biology. You do not need French in order to study any science related subjects, unless you wish to study abroad in France or have French as part of the degree, in which case it will be useful. Otherwise some universities look to see if you have a language up to a GCSE, but not much further than that.

As you have already made up your mind to study one of the science subjects, if you do all three sciences you will be able to study basically any type of science degree. Physics is generally not required for medicine, but definitely keep maths as all universities like maths due to the reputation of the subject.

Check on the different university prospectuses/go on open days, see which subjects they prefer. Generally, the sciences, maths and further maths are highly regarded subjects, so you can't go wrong doing them (though look at the amount of coursework required/general workload, as at the moment only three A levels are required for university application).