Born in London, David Langdon studied at the London School of Economics. From 1937 he was a regular contributor to Punch and from 1948 a cartoonist for Mirror Group newspapers. His work has also appeared in Radio Times and Paris Match, and he illustrated a number of humorous books. Langdon's work appeared on a number of advertising campaigns but the wartime Billy Brown character is probably the best remembered. Langdon was a member of the London Sketch Club in the 1940s.

Information taken from: London Transport Museum Database, February 2000, Farman, J., 'galleryonthegreen.co.uk', http://www.galleryonthegreen.co.uk/mainfiles/sketch/history.htm, accessed October 03 2003