Thanks, that's great advice. Maths fascinates me, but I'm unsure what type of maths, physics or engineering I'd really want to do.
Well it depends, you seem to excel in scientific and mathematical subjects, so you could maybe go for something rarer like Cryptology, or maybe something better known but exciting anyways like aeronautical engineering.
Honestly though, whatever you want to do you'll probably be able to do. But id agree with some of the others, take the year to look at different paths, and to maybe even get work experience, which will not only make you more employable but you'll be able to see what foes on behind the scenes.
Good luck! Tx