Farhi alternated between writing and acting, appearing in two James Bond films, From Russia with Love and You Only Live Twice in uncredited bit parts. He also wrote the 1962 film The Primitives as well as episodes of The Onedin Line and Return of the Saint. For the latter series, he write the script for the episode "Assault Force," which guest starred Kate O'Mara. Farhi also submitted an unproduced script for another cult favourite, The Prisoner. His script for that series, The Outsider, was published in the mid-2000s.