Guarda Online. Desmond's was a British television situation comedy broadcast by Channel 4 from 1989 to 1994. With 71 episodes, Desmond's became Channel 4's longest-running sitcom. The first series was shot in 1988, with the first episode broadcast in January 1989. The show was made in and set in Peckham, London, England and featured a predominantly Black British Guyanese cast.