Can I still do Math at University even though...

Would I be able to do Maths at University with A's in Maths and Further Maths at AS but a D grade in Physics? I've just done (most of) my AS exams, two of which were my two Physics papers. My grade in Physics has been alternating between C and D for some time now and I'm not too confidant that I've passed. I know that universities look at your AS results and that they lead to you (not) getting your desired course. I want to do Mathematics at University at a Master's level and I'm on route to getting A's in all of my Math modules, including Further Maths. The requirements of the course are A*A*A, and says that Further Maths is not necessary but is desired.