You could try, but maybe for places like Dundee? Or Leeds? Leeds have a low GCSEs requirement, but a lot of people apply. I got told that it was 1800 people for 80 ish places?
You just have to get a very high UKCAT, lots of work experience in a variety of fields, high percentage UMS in AS and probably a lot of extra-curricular activities - sport, music, charity shop, hospice, etc all next year, if you can.
Your 2 Bs in English Lit and Lang may hinder you from some. And your A in biology means that you can't apply for Birmingham, as Birmingham dental school wants A* in both bio and chem GCSE. So sorry for the bad news.
But, in no way does that mean you can't apply to dundee and leeds!!!! Places like KCL, Birmingham and Manchester may be a waste of an application as when I went to their open day, they said that the competition is fierce, A*/A in GCSE, As in AS and high UKCAT for 80 to 90 places.
You could also consider European dental schools!!!!! But by no means should you ever give up. I mean Patchey got in this year for sheffield dentistry, and he got 3A* and all As in his GCSEs? I think. , but he had a very high UKCAT - 700+!!! So, now you must turn your attention to other areas of your application to make sure that it's strong as possible to balance your GCSEs. Cos remember, dental schools look at everything about you, including academia and non-academia!!!!
You could also do new GCSEs in year 12 like me. Whatever you do though, DON'T DO RETAKES, E.G. let's say a student took GCSE chem in year 11, you got a B, he resat GCSE chem in year 12, then he got an A*. The 5 dental schools that I went for open day said that they don't take GCSE retakes or A-level retakes.