• 
  John Boulting

  regizor
• 
  Roy Boulting

  regizor

• 
  John Boulting

  scenarist

• 
  Peter Sellers

  Reverantul John Smallwood
• 
  Cecil Parker

  Archdeacon Aspinall
• 
  Isabel Jeans

  Lady Despard
• 
  Ian Carmichael

  Celalalt Smallwood
• 
  Bernard Miles

  Simpson

• 
  Brock Peters

  Matthew Robinson
• 
  Eric Sykes

  Harry Smith
• 
  Irene Handl

  Rene Smith
• 
  Miriam Karlin

  Winnie Smith
• 
  Miles Malleson

  Rockeby
• 
  Fred Griffiths

  Angry Man in Crowd Scene
• 
  Ed Devereaux

  Communications Officer

• 
  Mark Eden

  Sir Geoffrey Despard
• 
  Arthur Mullard

  Cast Member
• 
  Gerald Sim

  Self-Service Store Manager
• 
  Roy Kinnear

  Fred Smith
• 
  Geoffrey Hibbert

  Council Official
• 
  George Woodbridge

  Bishop
• 
  Nicholas Phipps

  Director-General
• 
  Ronald Adam

  Cabinet Minister #1
• 
  Olive Sloane

  Quarreling Housewife
• 
  Eric Barker

  Bank Manager
• 
  Russell Waters

  Bit Part, Cabinet Office
• 
  William Hartnell

  Major Fowler
• 
  Colin Gordon

  Prime Minister
• 
  John Junkin

  Reporter at Space Launch Site
• 
  Elsie Wagstaff

  Lady on Parish Church Council
• 
  John Comer

  Butcher
• 
  Basil Dignam

  Prisoner Governor
• 
  Conrad Phillips

  P.R.O.
• 
  Kenneth Griffith

  Rev. Owen Smith
• 
  Joan Hickson

  Housewife
• 
  Thorley Walters

  Tranquilax Executive
• 
  Henry B. Longhurst

  Deaf Gentleman
• 
  Peggy Ann Clifford

  Bit Part, Crowd Scene