Sally Kingsley - don't have a number to hand but am pretty sure she has a website so you should be able to google her. There are others and if names come to me, I'll add to this reply. I usually use the vet, hence my loss of memory!
Have used john taylor for years but seems to be difficult to contact at the moment? Why. Used Charlotte at Northern horse dentistry recently, came at short notice took what I said about my horses on board, very professional treated them all as individuals, highly recommend and will definitely use her again
Dan Astle-Carter.
Lovely and quiet with the horses - really settles a nervous one, and is also very very passionate about dentistry- he loves to explain what he is doing, and is really good. Well qualified, and always attending more training.
Robin Earnshaw is very good. Calm but firm which I think horses respond to. Personally I wouldn't use Sally Kingsley as, as she's also a qualified vet she's very keen to sedate horses and I don't feel that's necessary unless your horse needs anything more than general dental work or the horse is especially difficult. My sister has also used Dan Astle-Carter and rates him too.