Dave Carter

as Grierson

as Sgt. Duffy

as Inspector

as Prison Officer

as Laboratory Man

as Bill

as Silurian

as 1st Torpedo

as Museum Attendant

as Primord

as Desk Sergeant

as Jeweller

as Grierson

as Roundhead Officer

as Museum Attendant

as Sergeant Duffy

as Old Silurian

as Silurian

as Primord

as Prison Officer

as Stribos

as Brigadier Stribos

as Petty Officer Grigg

as Removal man