Last updated 18 August 2023

Cast
Patrick TroughtonDr. Who
Dudley FosterCaven
Jack MayGeneral Hermack
Donald GeeMajor Ian Warne
George LaytonTechnician Penn
Nik ZaranLt. Sorba
Anthony DonovanSpace Guard
Frazer HinesJamie
Wendy PadburyZoe
Bill RichardsGuard (On Beacon)
Edward CogdellGuard (On Beacon)
Tom SegalSpace Corp Technician
Neville SimonsSpace Corp Technician
Terry NelsonSpace Corp Technician
Clive RogersSpace Corp Guard
Alf CosterSpace Corp Guard
Peter RoySpace Corp Guard
Leslie ConradPirate Guard on Ta
John CaesarPirate Guard on Ta
Paul KirbyMiner (Space Pirates)
Gordon GostelowMilo Clancey
Lisa DanielyMadeleine Issigri
Raymond TurtonSpace Corp Technician
Tony HutchinsSpace Corp Guard
Neville SimonsSpace Corp Guard
Valerie StantonMadeleine's Secretary
Brian PeckDervish
John CaesarGuard (Pirate)
James HaswellGuard Thrace
Bill RichardsMiner (Space Pirates)
Edward CogdellMiner (Space Pirates)
Victor MaddernPirate Guard
Derek ChaferMiner (Space Pirates)
Leslie ConradGuard (Pirate)
Esmond KnightDom Issigri
Ron ConradSpace Corp Technician