can i do medicine if i resit yr 12

I do biology, chemistry, physics and maths. did little revision until may and most of revision was done during my exams. I think i did okay in:
unit1 + unit 2 - biology
unit1 - physics
unit1 - chemistry

I definately messed up:

unit 2 - physics
unit 2 - chemistry
maths - c1 c2 s1

These overall results will probably be U,C,D,E

However i know if i resit i can deffinately get at least a A,A,A,B as when i revise i can realy excell in all my subjects also i did no past paper practice which i think also played a massive role in my f*** up.

So my question is can i resit all of my year 12 subjects and possibly do medicine at university.

Also which universities would take a resit student.

These overall results will probably be U,C,D,E
.