Never heard of them! There was an excellent rabbit vet somewhere in Wickford (Diarmuid something), you could ask them if he was at that surgery (and if not they'll probably say 'oh no, he was at xxxxx') as there's probably a good chance that he trained some of the other vets well in rabbit procedures, before he retired.
The other place may be worth a try is Companion Care in Pets at Home in Chelmer Village. I know someone who had both their buns spayed there and one had its incisors removed without any problems. Presumably because lots of piggies and rabbits are sold in store, lots of them have their pets registered at the vets there? They probably have longer opening hours as well which might suit you?
