Diamonds on Wheels is a 1973 British family comedy film directed by Jerome Courtland and starring Peter Firth, Patrick Allen, George Sewell, Derek Newark, George Woodbridge and Barry Jackson. This was George woodbridge's last film and it was released 21 days before his death.

Cast

• Peter Firth as Robert "Bobby" Stewart
• Patrick Allen as Insp. Cook
• George Sewell as Henry Stewart
• Derek Newark as Mercer
• Dudley Sutton as Finch
• Barry Jackson as Wheeler
• Christopher Malcolm as Jock
• Richard Wattis as Sir Hilary Stanton
• Allan Cuthbertson as Gus Ashley
• Ambrosine Phillpotts as Lady Truesdale
• Maggie Hanley as Mrs. Maggie Stewart
• George Innes as Insp. Timothy
• George Woodbridge as PC Andrew
• Patrick Holt as Steward
• Andrew McCulloch as Billy
• Arthur Hewlett as Benjy
• Patrick McAlliney as Junkman
• Mark Edwards as Whiteman
• John Savident as Steward
• Robin Langford as Peter Pitt
• Spencer Banks as Charlie Todd
• Cynthia Lund as Susan Stewart