Do I have the potential to study at Oxford? (physics)

I'm in year 12, studying A2 maths AS physics AS chemistry and AS history. I've already got an A in AS maths (barely) and should be getting an A in the final A level (possibly an A*). According to my teachers I should be getting an A/A* in physics, an A in chemistry and an A* in history, which I think I can achieve. This would mean I would meet the requirements to get into Oxford (A*AA) however I think I may be overlooked by them because of my maths UMS, which average 81 so far ( I got a C in D1 :/) does anyone study physics at Oxford or know anyone who got similar grades to me? Do they only accept applicants who have exceptional module grades? i.e. 90% plus in maths modules

They don't know your module marks so they can't tell the difference between you and someone with 100% in maths at AS. The key differentiator will be the PAT, which is half maths.

Do they not ask for module marks?

you can choose to put them in your UCAS form but you're not required to.

just ace the PAT. it is so, so important. also, if it's D1 that's bringing you down as opposed to a core module or mechanics, then it's not so bad. but you really should consider taking up AS further maths this year