Thanks for the replies everyone!
To be honest, I don't know, at all, what I want to study. I want to take either medicine or law. The thing is, I do enjoy the sciences, so I think that I would find it easy and well, suited to me to take my a-levels around chemistry/biology. However, I'm not sure if I actually want to take medicine as a career, so.
On the other hand, law is, whilst something I'm not very well informed about, something that I would be intrigued in learning about and potentially having a career around. Though the problem with this is, I would have to take essay-based a-levels like history and english, and I wouldn't really enjoy those at all.