The role of Mrs. Chambers was played by Dennis Waterman's then Wife Patricia Maynard.
This was the first appearance of D C Jones, played by Michael Povey. He appeared in 21 episodes. The last one being The Wrong Goodbye (1989)
Harry Fowler (Monty Wiseman) previously appeared with George Cole in Those Kids from Town (1942) and Don't Panic Chaps (1959)
Patricia Maynard (Mrs Chambers) later appeared in Days of Fines and Closures (1989) as Lucy Harris. She previously appeared with Dennis Waterman in Abduction (1975)
Derek Fowlds (Meadhurst) previously appeared with Dennis Waterman in School for Unclaimed Girls (1969)