- Unknown:
- Leslie Phillips
- Unknown:
- James Robertson
- Unknown:
- Shirley Anne Field
- Unknown:
- John Fraser
- Unknown:
- Joan Sims
- Unknown:
- Arthur Haynes
- Unknown:
- Elisabeth Ercy
- Unknown:
- Dr Gaston Grimsdyke
- Unknown:
- Sir Lancelot Spratt.
- Director:
- Ralph Thomas.
- Dr Gaston Grimsdyke:
- Leslie Phillips
- Sir Lancelot Spratt:
- James Robertson Justice
- Nurse Bancroft:
- Shirley Anne Field
- Dr Miles Grimsdyke:
- John Fraser
- Matron Sweet:
- Joan Sims
- Tarquin Wendover:
- Arthur Haynes
- Tatiana Rubikov:
- Fenella Fielding
- Lambert Symington:
- Jeremy Lloyd
- O'Malley:
- Noel Purcell
- Rock Stewart:
- Robert Hutton
- Professor Halfback:
- Eric Barker
- Robert:
- Terry Scott
- TV commentator:
- Norman Vaughan
- Jeannine:
- Elisabeth Ercy
- Fleming:
- Alfie Bass
