| Person | Type | Job | Role(s) |
|---|---|---|---|
 Harry Waxman | Crew | Crew | Cinematography |
John Dark | Crew | Production | Executive Producer |
John Howell | Crew | Art | Art Direction |
Martin Charles | Crew | Editing | Editor |
Mike d'Abo | Crew | Sound | Music |
Robert Lennard | Crew | Production | Casting |
 Roy Boulting | Crew | Directing | Director |
M.J. Frankovich | Crew | Production | Producer |
 Michael Stevenson | Crew | Directing | Second Assistant Director |
Kenneth J. Withers | Crew | Camera | Camera Operator |
Terence Frisby | Crew | Writing | Screenplay, Theatre Play |
 Andre Charisse | Cast | Actor | Concierge (uncredited) |
 Avril Angers | Cast | Actress | English Tourist in Lift |
 Christopher Cazenove | Cast | Actor | Nigel (uncredited) |
Colin Vancao | Cast | Actor | Cigar-Smoking Wedding Guest (uncredited) |
 Constantine Gregory | Cast | Actor | Michel Le Guestier |
 Cy Town | Cast | Actor | Photographer (uncredited) |
 Diana Dors | Cast | Actress | John's Wife |
 Eric Barker | Cast | Actor | Wedding Guest (uncredited) |
 Françoise Pascal | Cast | Actress | Paola |
 Gabrielle Drake | Cast | Actress | Julia Halforde-Smythe |
Georges Lambert | Cast | Actor | Floor Waiter |
Geraldine Sherman | Cast | Actress | Caroline |
 Goldie Hawn | Cast | Actress | Marion |
James Payne | Cast | Reporter (uncredited) | |
 John Comer | Cast | Actor | John, the porter |
 John Serret | Cast | Actor | Elevator Operator (uncredited) |
 Juba Kennerley | Cast | Actor | Wedding Guest (uncredited) |
 Judy Campbell Exner | Cast | Actress | Lady Heather |
 Lance Percival | Cast | Actor | Willie the Bridegroom (uncredited) |
 Margaret Lacey | Cast | Actress | Autograph Hunter at Wedding |
 Marianne Stone | Cast | Actress | Reporter |
 Mark Dignam | Cast | Actor | Wedding Guest (uncredited) |
 Nicky Henson | Cast | Actor | Jimmy |
 Nicola Pagett | Cast | Actress | Claire the Bride |
 Pearl Hackney | Cast | Actress | Wedding Guest (uncredited) |
 Peter Sellers | Cast | Actor | Robert Danvers |
 Philippe Mareuil | Cast | Actor | Doublure voix française de Tony Britton |
 Raf De La Torre | Cast | Actor | Monsieur Le Guestier |
 Roy Lansford | Cast | Waiter (uncredited) | |
 Roy Skelton | Cast | Actor | Reporter (uncredited) |
 Ruth Trouncer | Cast | Actress | Gilly Hunter |
 Thorley Walters | Cast | Actor | Manager of Carlton Hotel |
Tom Marshall | Cast | Actor | Bryan |
 Tony Britton | Cast | Actor | Andrew Hunter |
Jack Armstrong | Cast | Actor | Wedding Guest (uncredited) |
 Victor Harrington | Cast | Actor | Wedding Guest (uncredited) |
 Robin Parkinson | Cast | Actor | Reporter (uncredited) |
Lewis Alexander | Cast | Wedding Guest (uncredited) | |
Ernest Blyth | Cast | Wedding Guest (uncredited) | |
Mabel Etherington | Cast | Actress | Wedding Guest (uncredited) |
Muriel Greenslade | Cast | Wedding Guest (uncredited) | |
Hugh Elton | Cast | Photographer (uncredited) | |
Ian Selby | Cast | Actor | Wine Taster (uncredited) |
Mickey Varey | Cast | Constable (uncredited) | |
Terry Sartain | Cast | Reporter (uncredited) | |
Bob Raymond | Cast | Hotel Porter (uncredited) | |
John Tatham | Cast | Wedding Guest (uncredited) | |
Fred Machon | Cast | Sightseer at Wedding (uncredited) | |
Aileen Lewis | Cast | Actress | Wedding Guest (uncredited) |
George Holdcroft | Cast | Wedding Guest (uncredited) | |
Gordon Humphries | Cast | Reporter (uncredited) | |
| Person | Type | Job | Role(s) |
