Hello!
There are no required A levels you need to take for law, although essay-based ones are useful, and preferred by some. Subjects such as English and history are said to be good subjects to take, but there's really no harm in choosing other subjects too, such as more science-based ones.
When I was in year 11, I wanted to study law at university, and my A level options are biology, law (which is by no means required, however is a good subject to help you confirm you definitely want to do law), and psychology