Westerby, former cricketer and sports journalist, is an "Occasional" asset of British intelligence ("the Circus"). Initially recruited by George Smiley, he was recalled from his Italian idyll and despatched to Hong Kong.
Westerby was played by Joss Ackland in the 1979 television serial based on the novel Tinker Tailor Soldier Spy. His role in the 2011 film adaptation was amalgamated with that of Sam Collins, played by Stephen Graham.
- https://www.imdb.com/character/ch0113470/?ref_=ttfc_fc_cl_t18 Archived 2016-10-08 at the Wayback Machine[user-generated source]
- https://www.imdb.com/character/ch0113470/?ref_=ttfc_fc_cl_t14 Archived 2016-10-08 at the Wayback Machine[user-generated source]
- "The Complete Smiley - The Karla Trilogy, Book 2: The Honourable Schoolboy". BBC. Retrieved 26 October 2013.