Hey!
Tbh I didn’t apply to kings so I can’t rly comment on it. However as for your QMUL or bristol dilemma I would honestly say the more sensible thing to do is go to the QMUL one. Just because bristol’s ucat cut off is INSANELY high (I applied this year with my ucat being comfortably above last years cut of and still, got rejected pre interview) and so because you are still in year 12 and haven’t sat your ucat yet, you are not really in the position to judge whether that’s somewhere that is sensible to even apply in the first place. However with QMUL, their cut off is rather similar to a lot of unis and because it’s closer to you there rly isn’t as much harm in going and having a look. And adding on if you find your Ucat ends up being really good I honestly don’t think there is a lot of harm in applying to both kings and qmul (provided you have good gcses for kings) as both have relatively higher post-interview acceptance rate. Tbh you can argue that the london unis aren’t actually that much more competitive - just by looking at the stats, than out of london for dentistry so don’t feel pressured not to apply if you are in the position where you think you can get the interviews for both. (especially because it sounds like you really like london)