Hey there,
I don't think you would be able to find out whether they would consider a lower grade until results day unfortunately, as it all depends on how many people got or missed their offers!
This may be slightly different for every uni, but usually universities will tend to give more people offers than the course capacity, as they know a lot of people will put them as insurance and go to their firm, some may not firm or insure that uni at all, and others will firm and then miss their offer.
It would completely depend on how many people get the grades to meet their offer for the specific course - the admissions team would usually then re-assess and decide whether or not to take those who only missed out by a small amount. This would all be done between the time the universities receive everyone's grades and then results day, but they would not be able to tell you anything until results day.
Hopefully that makes sense?
Jorja (LJMU Student Rep)