dental hygiene

I really want to study dental hygiene at a university in London. Currently only 3 universities offer it in London and those are kings college London, queen mary's and South Bank. From my year 12 mocks I am predicted 3 b's and that's what kings is looking for. Queen mary's requirements are A,B,B and South banks is B,B,C. I am not sure if I will get predicted higher for my ucas but I don't know if its risky for me to apply and not get accepted as Kings is very hard to get into and they all require interviews. I don't know if I should stick to this or apply for radiography but I have no work experience or any sort of online courses I've done for radiography. For dental hygiene I've completed 2 online courses and 1 week work experience at a pharmacy. Anyone please help!!!!