I agree, I think its a big misconception that medicine/dentistry applicants NEED to do all three sciences AND maths! most applicants do this and its become the box standard that many think they need to adhere to but for the most part your only required two sciences, including chemistry so doing che and bio is absaloutly fine! Having applied to dentistry this year, Ive emailed and rang up every uni about this when I was picking my a levels, and they all told me that the 2 sciences were required along with two other subjects of my choice, apart from general studies and critcal thinking. Basically youll mainly need 4 Good As levels and then you can drop one and continue three on to A2.
Your A levels are fine, Its better to do subjects youll do well in than subjects that your not likely to get As in, because you need those A's if you want to study dentistry!
I did chem, bio, english lit and lang as well as psychology. Like you I really loved english so opted for this rather than maths, which evidently I loathed.
When speaking to admission tutors at open days and my interviews, They all said that its nice too see something differnt somtimes!
So go with those A levels, if you can do english lit than go for it, if not stick to those Alevels.
Thanks! I could do lit, but I know I would loveeee to do lang!
Hope that helped,
Good luck with everything!