I don't think you can get around the GCSE requirement for uni. You need a Level 2 in Maths, either through GCSE or any other similar qualification.
After getting the decent grades you would need in your A Levels, you would probably need to work on how you approach maths. I don't know your specific situation, but there is often a type of mindset and thinking that's involved in maths. If you don't have it, life can be unnecessarily more difficult.