Frank George Special Effects Assistant
Norman Wanstall Sound Effects
John Hilling Wardrobe Master
Lenny Rabin Gangster (uncredited)
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