Ralph Carrigan appeared in several Doctor Who television stories. Carrigan's only other known acting credits were in a 1965 edition of The Wednesday Play, a 1968 episode of Point Counter Point and the 1969 film The Body Stealers.
- The Myth Makers (as a Troy citizen, uncredited) (DWM 284)
- The Ark (as Monoid Two)
- The Macra Terror (as a Cheerleader)
- The Mind Robber (as a White Robot)
- The Invasion (as a Cyberman)
- Internet Movie Database at the