Mr French

In the novel One, Two, Buckle My Shoe, Mr French is mentioned. He is a dentist, and has a practice in Harley Street.

When Poirot asks Alice Adams if she recommended Mabelle Sainsbury Seale to go to Mr Morley, she tells him that she goes to Mr French, and would have told Miss Sainsbury Seale to do the same, if she had been asked.