One Of Our Dinosaurs Is Missing

Last Updated on: June 26th, 2024

One Of Our Dinosaurs Is Missing (1975 Movie)

“One of Our Dinosaurs Is Missing” is a British comedy-adventure film released in 1975. The movie was produced by Walt Disney Productions and directed by Robert Stevenson.

The story is set in 1920s London and revolves around the disappearance of a microfilm containing top-secret information. The microfilm is hidden inside a dinosaur bone, and a group of British intelligence agents known as the Ministry of Defence (MOD) are tasked with retrieving it before it falls into the wrong hands.

When the microfilm goes missing from the MOD’s possession, the agents embark on a frantic search to find it. At the same time, a group of nannies working in London discovers the dinosaur bone, unaware of its hidden secret. Among the nannies is Miss Hettie (played by Helen Hayes), who becomes the unlikely hero of the film.

Miss Hettie and her fellow nannies decide to take matters into their own hands and embark on a wild adventure to protect the dinosaur bone from falling into the wrong hands. They encounter various challenges and hilarious situations as they race against time to keep the microfilm safe and prevent a national security disaster.

The film features an ensemble cast, including Peter Ustinov, Clive Revill, Derek Nimmo, Joan Sims, and Bernard Bresslaw, among others. The combination of humor, adventure, and espionage elements makes “One of Our Dinosaurs Is Missing” an entertaining and lighthearted family film.

While the film received mixed reviews from critics upon its release, it has since become a cult classic and is remembered fondly by many for its unique and quirky storyline. The movie is known for its charming British humor and the delightful performances of the cast.

“One of Our Dinosaurs Is Missing” showcases the creativity and imagination of Walt Disney Productions in crafting fun and engaging films for audiences of all ages. It remains a beloved addition to Disney’s library of live-action films and continues to entertain viewers with its whimsical and light-hearted story.

Additional Details

  • Movie Studio:
  • Year Released:
  • Type of Movie: Live-Action
  • Box Office: $5.5 million
  • IMDB Link


  • Derek Nimmo: Lord Southmere
  • Hugh Burden: Haines
  • Bernard Bresslaw: Fan Choy
  • Helen Hayes: Hettie
  • Joan Sims: Emily
  • Deryck Guyler: Harris
  • Peter Ustinov: Hnup Wan
  • Clive Revill: Quon
  • Molly Weir: Scots nanny
  • Andrew Dove: Lord Castleberry
  • Max Harris: Truscott
  • Max Wall: Juggler
  • Natasha Pyne: Susan
  • Joss Ackland: B.J. Spence
  • Arthur Howard: Thumley
  • Roy Kinnear: Superintendent Grubbs
  • Leonard Trolley: Inspector Eppers
  • Joe Ritchie: Cabbie
  • Percy Herbert: Mr. Gibbons
  • Joan Hickson: Mrs. Gibbons
  • John Laurie: Jock
  • Angus Lennie: Hamish
  • Jon Pertwee: Colonel
  • Kathleen Byron: Colonel’s wife
  • Lucy Griffiths: Amelia
  • Aimée Delamain: Millicent
  • John Bardon: Bookmaker
  • Jane Lapotaire: Miss Prescott
  • Richard Pearson: Sir Geoffrey
  • Michael Elwyn: Haycock
  • Anthony Sharp: Home Secretary
  • Wensley Pithey: Bromley
  • Frank Williams: Dr. Freemo
  • Peter Madden: Sanders
  • Erik Chitty: Museum guard
  • Amanda Barrie: Mrs. B.J. Spence


  • Director: Robert Stevenson
  • Producer: Bill Walsh
  • Music: Ron Goodwin

Movie Trailer:

About the Author

Craig Smith
I am founder and editor of My passion for all things Disney goes pretty far back to my first trip to Walt Disney World in the mid-80's. I have since returned to the magical place more than 20 times. I started this site when I came to the realization that I spent a significant portion of my day reading articles about Disney and watching Disney content with my 8-year old, so it made sense that I would start sharing some of what I read and see and building a little community around it. Other interests include 80's nostalgia, vintage toys, video games, LEGO, Star Wars and tech gadgets. Other site isDMR.