Characters played by Dennis Dugan
Tom Trimble
Characters played by Jim Dale
Sir Mordred
Characters played by Ron Moody
Merlin
Characters played by Kenneth More
King Arthur
Characters played by John Le Mesurier
Sir Gawain
Characters played by Rodney Bewes
Clarence
Characters played by Sheila White
Alisande
Characters played by Robert Beatty
Senator Milburn
Characters played by Cyril Shaps
Dr. Zimmerman
Characters played by Kevin Brennan
Winston
Characters played by Ewen Solon
Watkins
Characters played by Pat Roach
Oaf
Characters played by Reg Lye
Prisoner
Characters played by Bruce Boa
Air Force Officer
Characters played by Al Lampert
NASA Technician
Characters played by Derek Suthern
NASA VIP