I’ll be doing law next year hopefully. When I went to an open day for a university, they said that when it comes to studying law, there’s no constraints as to what A levels you study, they all bring something to the table - minus the ‘soft subjects’.
Personally I am studying Maths, Physics and Computer Science & the person I was speaking to at the open day said that they are all very good for law as you’ll have the analytical, critical thinking and problem solving mind set. Moreover, I’m also head boy, which he said that it that also helps as it develops your articulation, how you speak, body language and improves your confidence in public speaking. So I’d say go for the middle, do one or two essay and maybe one science or the other way round.
The choice is really up to you, as I’ve mentioned, Law takes most A-levels.