Colin McGruder, played by Patrick Mower and Ray Stackpole, played by George Layton, previously appeared in Golden Fleece (1975)
Lynda Bellingham (Nancy King) later appeared in Sweeney! (1977) as Janice Wyatt. She also later appeared with Dennis Waterman in Casualty (2007)
Frederick Jaeger (Goldman) previously appeared with John Thaw in A Place of Refuge (1965). He also later appeared with Dennis Waterman in In (1982)
Roger Sloman (Cosby) later appeared with Dennis Waterman in Dreamhouse (1982) and A Roman Empire (1991)
This edition was second in the charts with an audience of 8.25 million under the JICTAR Ratings System.