Frank George Special Effects Assistant
Norman Wanstall Sound Effects
Lenny Rabin Gangster (uncredited)
John Hilling Wardrobe Master
Basil Newall Makeup Artist
Jane Murdoch Flying Circus Pilot (uncredited)
Tricia Muller Sydney (uncredited)
L. C. Rudkin Production Manager
William Hurndell Gangster (uncredited)
Charles Russhon Technical Advisor