There seems to be a growing interest in doulas - I understand they are very common in Singapore. When I was pregnant last time (late 2002) I asked Hulda at Annerley if they had doulas, and she said she was considering acting as one herself.
Re lactation consultants - I've seen them all, and the most qualified/experienced is Mrs Chee at Everdawn. The other midwife services and the Matilda also offer qualified lactation consultants who were helpful to me, but my impression is that Mrs Chee is more focused on this area. She also lectures on it and attends international conventions. With this background she was the one to identify immediately what our unusual issue was.