You may recognise this building as Whitehaven Mansions, the London home of Agatha Christie's Belgian detective, Hercule Poirot, in the the British TV series Poirot starring David Suchet.
In actual fact it is Florin Court in Charterhouse Square.
The undulating wave of the facade of this building is absolutely spectatcular and I never tire of seeing it when we visit Poirot through our television screens.
I've just watched The Third Floor Flat, an episode from series 1, where a women is murdered two floors down from Poirot and he barely leaves the building during the whole show. Bliss ... except for the poor murdered woman of course.