What a-levels do I need to take to be a barrister and study law at uni?

I'am currently doing my GCSE's I take Art ,French ,History ,Child development and obviously the core subjects in all of these subjects I am predicted at least a C in art and child development I'm predicted an A (not that is relevant to a career in law) in child development in predicted and b . I am also trying to decide what collage or 6th form to go to. I want to become a barrister and was wondering if anyone could help me decide what a-levels to take so I can get into Uni. Thanks :)