I understand that some sort of maths will be involved in this type of career, however, wouldn't they teach all of this in the university course, due to not needing a level for some of the courses? For example, cryptography is taught on the course. I understand it's better to have some idea what's happening before the course, but as I said, I don't think I do well in maths at A Level, I'm alright with maths, but I can't see myself doing well in the A Level.