How would graduating later change your honours level?

Do you know your class rank?

I need a certain amount of HD grades to be awarded first class, I have the required points already (assuming i get the HD's with the extra units). Just wondering whether it is worth taking the chance. I would graduate 6 months later as a result.

My university doesn't do a class rank system, my grades average 70-77%

The Cambridge deadline has passed and Oxford is due in mid-Jan -- so they wouldn't see your new grades anyway?

Yeah I would reapply next year if I wasn't accepted. Really just wanting to know if my grades are such that my chances are high or not and whether that kind of thing might make a practical difference to my application.