phillip french on the lady vanishes

The screenwriters, Frank Launder and Sidney Gilliat, both much influenced by Hitchcock, had radically reworked the plot and the characters and most significantly had invented the insouciant cricket-loving Englishmen, Charters and Caldicott. As played by Basil Radford and Naunton Wayne, they were to become the greatest comic duo ever created in the British cinema, national archetypes that stamped themselves on several generations of moviegoers. The role played by Wilfred Hyde-White in The Third Man was originally written by Graham Greene for Radford and Wayne, and they were much admired by Harold Pinter. 

http://www.guardian.co.uk/film/filmblog/2012/jul/24/my-favourite-hitchcock-lady-vanishes