I agree with others that it is a concern that you have failed your maths GCSE (if you have). Not only will many unis require it for Law but further down the line, some law firms will require it. And when you are applying for training contracts, some firms will require you to pass assessments that include analysing your numerical skills so that could be a problem.
I think you should consider retaking your maths GCSE if there is any opportunity to do so.