Peter Sumner

as Lt. Pol Treidum (uncredited)

as Dowie Steed

as Captain Gardiner

as Tewson

as Kennett

as Teacher

as Phil Buchanan

as Errol Baumann

as Ben Thompson

as Dr Dickenson

as Buzz

as Jonathan Bromley

as Dixie Hart

as Lt. Pol Treidum

as Stanley Phillips

as Cooper

as John Meadows

as Bill Hayden

as Professor Ed Woodman

as Reg

as Grant's Father