Doctor Who: The Armageddon Factor

The final segment of the Key to Time is at the heart of a devastating war between neighbouring planets Atrios and Zeos. The Fourth Doctor discovers that a sinister entity is manipulating events and the cost of obtaining the final segment may be more personal than he imagined.

• Michael HayesDirector
• Bob BakerWriter
• Dave MartinWriter
• Dudley SimpsonOriginal Music Composer

• Tom BakerThe Doctor
• Mary TammRomana
• John LeesonK-9 (voice)
• John WoodvineMarshal
• Lalla WardPrincess Astra
• Davyd HarriesShapp
• Ian SaynorMerak
• Ian Liston'Hero'
• Susan Skipper'Heroine'
• John CannonGuard
• Iain ArmstrongTechnician
• Pat GormanPilot