Gentle Dental is a great dentist, the staff are very friendly (especially the hygienist Betsy..say Hi when you see her!) and always remember you even if you only see them every six months!
They never shout at you if you have bad teeth (and being English that's a good thing...note No i don't have teeth like Austin Powers, thank you for asking!) and are super gentle when scraping and polishing and using the little grinding wheeled thingy.
A really cool thing that they have is TV's in the rooms, so while the dentist is prodding and drilling and poking, you can watch sponge-bob square-pants...*cough* or whatever takes your fancy!