Gareth Thomas
— Roj Blake
Sally Knyvette
— Jenna Stannis
Paul Darrow
— Kerr Avon
Jan Chappell
— Cally
Michael Keating
— Vila Restal
David Jackson
— Olag Gan
Peter Tuddenham
— Zen (voice)
Stephen Greif
— Space Commander Travis
Jacqueline Pearce
— Supreme Commander Servalan
Peter Miles
— Secretary Rontane
John Bryans
— Senator Bercol
Ian Cullen
— Base Commander Escon
Peter Craze
— Prell
Isla Blair
— Sinofar
Patsy Smart
— Giroc
Carol Royle
— Mutoid
David Bailie
— Chevner
Julia Vidler
— Avalon
Glynis Barber
— Mutoid
John Rolfe
— Terloc