We see Rosan Meyer for our toddler's dietetic and nutrition needs.
Such a caring, lovely woman who has saved my sanity when dealing with a fussy, allergic child who was severely underweight. Lots of common sense, very approachable and 'human', and a wonderful way about her.
She's Harley Street now too (we used to see her at Great Ormond St, when she was living in Paris and commuting - a sign of her true dedication to these children!). A real expert in her field I would say.
http://www.rosan-paediatricdietitian.com/