Karina Longman, Deborah Watling (1948), Toby Hadoke (1974), Suranne Jones (1979), Catherine Bailey (1980), David Gyasi (1980).
In 1965, The Rescue episode, The Powerful Enemy was broadcast, starring the First Doctor.
Still missing his granddaughter, the Doctor and his companions land on the planet Dido, a world familiar to him. They come into contact with the dangerous Koquillion, a bipedal inhabitant of Dido.
In 1971, Terror of the Autons brought the Third Doctor with Jo Grant and Brigadier Lethbridge Stewart to investigate the theft of the Nestene unit and the sabotage of the radio telescope facility.