Tooth in Lower Marsh, Waterloo. The dentist, Anna, professional and wonderful. In fact the whole team, from receptionist to nurses are the best I ever found in London. The dental practice is new and when I go there I get the feeling they are open just for me (they are not, but know how to make you feel at ease).
I have not connections to Tooth, just a very happy customer.
Found them last spring thanks to this site so thank you to London SE1 as well!!