Nigel Davenport
— Inspector Potter
Neil McCarthy
— PC Miller
Marjie Lawrence
— Mrs. Miller
Michael Robbins
— Sergeant Strickland
Carmel McSharry
— Mrs. Lattimore
Shelagh Wilcocks
— Canteen supervisor
John Le Mesurier
— Superintendent Melchior
Jeremy Longhurst
— Vicar
Evelyn Lund
— Mrs. Potter
Jacqueline Blackmore
— Mrs. Potter's Nurse