Same here, although my degree didn't require maths A-level. There are times when I wonder "hmm would I have known this alreay had I done A-level maths at schoo

Same here, although my degree didn't require maths A-level. There are times when I wonder "hmm would I have known this alreay had I done A-level maths at school?" but that I think is general imposter syndrome more than anything. At least for me, I've never needed anything particularly special maths-wise for professional work, apart from derivatives for ML/AI and even that was just academic-self-pleasuring from the course I took... no ML library requires you to mathematically prove something before you can use them (at least not the ones I have used)