One of Our Dinosaurs Is Missing

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

Peter Best Sound Editor Bill Walsh Writer, Producer Robert Stevenson Director