TV Appearance

Charters and Caldicott made a TV aapearance in a 1985 BBC mystery series titled Charters and Caldicott but updated to the 1980s. It featured six 50 minute episodes broadcast on BBC1  from 10 January to 14 February 1985.
The story shows the pair in their retirement. Charters is a widower living in a cottage near Reigate whilst Caldicott lives in Viceroy Mansions in Marleybone.  
Charters and Caldicott regulalry meet up in London; Charters travels to his Pall Mall club via a Green Line bus (hailing it on the street as if it were a taxi).
The TV series has Charters and Caldicott as retired from the 'Foreign Services.  However, Sidney Gilliat (of Launder and Gilliat - the creators of Charters and Caldicott) was not happy about how the characters had developed or were being represented and consequently wrote to the national press expressing his surprise and hence disapproval.

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Charters and Caldicott by Stella Bingham

Written by Stella Bingham, this is a novelisation of the TV series.  At the time of it being written, Stella was the partner of Keith Waterhouse the writer of the TV show.

Charters and Caldicott are now settled comfortably into retirement when their leisurely routine of lunch at the Club and amiable argument about cricket averages from days long past is shattered when the body of a strange girl is found in Caldicott's flat.

Dogged by the fastidious and disapproving Inspector Snow, they attempt to unravel the mysteries around them: switched handbags, unexplained deaths, cryptic messages, such as "Mix Well and Serve," and a fellow clubman who turns up at every twist of their journey.