Help needed with A-Level subjects.

I vote chemistry too lol
I do all sciences at A-level and am in A2, if you put the effort in, chemistry can be very easy, the same with physics, exam questions do not change, simply applying knowledge, the only science that has hard exams is Biology (large question bank for examiners to choose from) but you like it so dont worry...

for your career choice i'd advise Chem, physics will not help even a little in what your interested in. where as Chemistry + Biology is a killer combination and will allow you to do almost anything to do any course on living things (biochem, biological studies etc...), but just dont expect to change to do a mathsy degree with those A-levels lol

go on ucas and search some courses that look cool for you and check the entry requirements, this will give you a sense of what A-levels you'll need and what kinda grades your looking at. GCSE to A-level is a big jump.

good luck

A-level
BBB including Biology or Double Award Applied Science + GCSE Chemistry or Double Award Science + GCSE Mathematics
Note: It would be an advantage to have studied Chemistry beyond GCSE level.

Teachers? The best. In all honesty, my college has an extremely strong set of departments (can only speak for my subjects), but it's more annoying when you find out your physics teacher wrote part of your exam. He's awesome and rule abiding to the max though, so we didn't even know before hand.
Chemistry, he graduated from Cambridge, and you either get on with him really well, or you don't. You usually don't if you don't do work etc, but the rest of our class really get on with him, and he teaches like a baws.