A-level choice and Law at Oxbridge

Hey guys!
Sorry in advance for this long and messy post, but I am desperate and need some help.

In September I have started my AS-level course. My subjects are: French, History, Government and Politics, Maths. I want to study LAW in future and I am aiming for Oxbridge/UCL/LSE.

Here is the problem: When I was choosing my subjects I was advised to take Maths because universities look favourably at Maths when you want to study Law. Is this true? The thing is that I don't really like Maths. I got A* for my GCSEs, but I find it really boring and every lesson is a torture for me. With this attitude, I am not sure whether I would be able to achieve high grades (which I need) for my AS. Also it takes huge amount of my time, so I cannot do other subjects in such a depth. I was thinking about dropping Maths and taking Psychology.

Does it really matter that much to have Maths as your AS-level and is it more recognised by universities and do they really care about your subjects? Do you think it is worth it to carry on with Maths?

Thanks,
Becky