Yh, I'm sure you will need to do A level Maths as it will help you. Tbh I do a level maths and I got a B at GCSE and it's not my strongest point but it's no thaattt hard like how people descibe it. I just wish I took it seriously from the start of the year and I wouldnt have to cram stuff in at the last minute. I also do A level Biology and I think thats wayyy harder than Maths. Hope I helped youu