He featured in the 1974 11-part radio adaptation of Evelyn Waugh's "Sword of Honour". In 1986, he was a regular in the first series of the LWT sitcom "The Two of Us", and guested in an episode of "Super Gran" in May 1987, which was the last role he filmed. His final television appearance was in the autumn of the same year in "Knights of God", which had been filmed two years earlier. Troughton also appeared in the first episode of Central Independent Television's "Inspector Morse", entitled "The Dead of Jericho", which was originally transmitted on ITV on 6 January 1987.