Cast

• Peter Davison (The Doctor)
• Nicola Bryant (Peri Brown)
• Caroline Morris (Erimem)
• Phyllida Law (Beldonia)
• Jenny Agutter (Voice)
• Christian Coulson (Pelleas)
• Yasmin Bannerman (Pandora)
• Nicholas Briggs (Zixlyr / Arktos / Nardo)
• Jane Goddard (Alpha Centuri / Alyxlyr / Computer)
• Richard Earl (Frankis / Grok / Croaky Voice)
• Philip Childs (Foreman / Herald)
• Thomas Brodie-Sangster (Miner)
• Barnaby Edwards (Young Miner)