HELP! Law vs Economics

I’m trying to decide between law or economics for university and I would appreciate any advice 🫶
Pros and cons for each subject?
Does law involve a lot more independent study than other subjects?
What is a good LNAT score for Russell group universities?
What careers arise from doing an economics course?

Answering the economics side of your queries:
What are the pros/cons for each subject?
Bit of a pointless question in my opinion - what is a pro of an econ degree for one person can be a con for another student studying the exact same course. Without more information about the sort of things you want from a degree and what you think you might enjoy, any response beyond "it depends" will be spurious and useless.
What careers arise from doing an economics course?
Probably 90% of careers don't require you to have studied a specific subject at university, so you'll be able to do basically any career that doesn't obviously require a certain degree that's not economics (e.g. becoming a doctor/lawyer/engineer/etc etc).
A more useful question is what sort of careers do economics graduates usually go into. Here, I would say that the majority of economics grads I know generally go into one of finance, consulting or the civil service/public sector policy roles. Obviously it will depend where you study and where you want to work after uni (e.g. probably not a tonne of investment banks in Middlesbrough if you wanted to work there for example haha), and what you're actually interested in.
But the three groups I mentioned are quite broad, finance covers lots of areas like investment banking, trading, research, private equity, venture capital, commercial banking, wealth/asset management, etc. Econ grads looking to work in the public sector can go into the generalist fast-stream but you see most in the Government Economic Service (largest employer of econ grads), the Bank of England, as well lots of other smaller public sector organizations. The UK has a big consulting industry so lots go into that too, whether that be more traditional consulting (management & strategy consulting), economic consulting (usually microeconomic/competition focused) or working in more generalist roles at big consultancies (e.g. in audit, assurance, etc).
Now, lots go into roles outside these three broad areas, but I would say these areas are generally the most popular and soak up probably the bulk of economics grads at the good-to-elite universities.

Hello 👋 currently a Y13 wanting to fo law so I'll try and answer the law side for now until someone who has a better idea fully answers them instead for you.
What are the pros/cons for each subject?

Does law involve a lot more independent study than other subjects?
What is a good LNAT score for Russell group universities?

Thanks so much, and wish you success in pursuing law 🫶
Which universities are you apply to?

Thanks 😃
Going for Bristol, Liverpool, Lancaster, UEA and one other good RG uni but don't know yet