Last updated 17 August 2023

Cast
Jon PertweeDoctor Who
Elisabeth SladenSarah Jane Smith
Nicholas CourtneyBrigadier Lethbridge-Stewart
Kevin LindsayLinx
Donald PelmearProfessor Rubeish
June BrownEleanor
Alan RoweEdward of Wessex
Jeremy BullochHal
Sheila FayMeg
Gordon PittEric
David DakerIrongron
John J CarneyBloodaxe
Jacqueline StanburyMary
David CleeveUNIT Soldier
Steve IsmayUNIT Soldier
Keith NorrishIrongron's Soldier
Alan Charles ThomasIrongron's Soldier
Alan LenoirIrongron's Soldier
Jimmy LyonIrongron's Soldier
Bill HerbertIrongron's Soldier
Emmett HennessyIrongron's Soldier
Roger MarstonScientist (Irongron)
George BallantineScientist (Irongron)
David EynonScientist (Irongron)
Eden FoxScientist (Irongron)
Douglas DomingoUNIT Soldier
Robert PetersUNIT Soldier
Tom AtkinsIrongron's Soldier
Dick WeableIrongron's Soldier
Michael RalphIrongron's Soldier
Ray DunbobbinIrongron's Soldier
Brian BowlesIrongron's Soldier
David BuswellIrongron's Soldier
Michael BooneIrongron's Soldier
Steve BrunswickIrongron's Soldier
Alan LuxtonIrongron's Soldier
Andrew GreenwoodIrongron's Soldier
Howard WilliamsonIrongron's Soldier
Jim WhelanIrongron's Soldier
Jon JamesIrongron's Soldier
Malcolm StevensIrongron's Soldier
Sidney TomasIrongron's Soldier
Andrew AbrahamsSentry (Irongron)
Paul PhillipsScientist (Irongron)
John HughmanRobot (interior scenes)
Ronald NunnerySoldier (Edward of Wessex)
Allan DeutromSoldier (Edward of Wessex)
Clifford KershawSoldier (Edward of Wessex)
Bill MonksRobot (exterior headless)
Dudley LongRobot (exterior with head)
Steve BrunswickSentry
David CarruthersIrongron's Soldier
Marc BoyleSoldier (Stunts)
Bella EmbergKitchen Hag
Terry WalshStunt Double for The Doctor
Bill LodgeIrongron's Soldier
Mary RennieKitchen Hag