When heavy fog prevents any flights from leaving London Airport, a group of passengers are put on a bus driven by Percy Lamb to drive to another airport. The fog is that heavy Percy doesn't know where he is going or that he is carrying stolen gold bullion that the robbers and police are relentlessly pursuing.

• Val Guest Productions
• Frankie Howerd
• Margaret Rutherford
• Petula Clark
• George Coulouris
• Terence Alexander
• Toke Townley
• Belinda Lee
• John Horsley