48 Swan Court

48 Swan Court is a unit in an apartment block in Chelsea which Agatha Christie and her husband Max Mallowan purchased in 1948 and where they lived for a time. Swan Court is a large brick structure of art deco design built in 1931 and used to incoporate a restaurant on the ground floor, Betty's, while Christie apparently frequented.

Christie lived at Swan Court (among other places) for some 28 years and, while there, wrote such works as Witness for the Prosecution, Crooked House and The Mousetrap. The Borodene Mansions in Third Girl is believed to be based on Swan Court. Alexandra Park, Queensgate, which was used as the filming location of "Borodene Court" in the 2008 ITV adaptation of Third Girl bears a striking resemblance to Swan Court.