Farnaby is a long-time member of "The Mighty Boosh" supporting cast, having had roles both in their series and co-starring in the quasi-spinoff film "Bunny and the Bull". He is also well known for his similarly offbeat characters in the CBBC live-action series of "Horrible Histories", such as Caligula and the Grim Reaper. Other notable television work includes a recurring role on the sitcom "Jam & Jerusalem" and co-starring as eccentric neighbour Sloman on "The Midnight Beast"'s TV series. He previously had a very brief role in "Coronation Street" in the 1990s.