David Farrar
— Detective Inspector Craig
David Knight
— Lee Cochrane
Julia Arnall
— Sue Cochrane
Anthony Oliver
— Sergeant Lyel
Thora Hird
— Kelly's landlady
Eleanor Summerfield
— Sergeant Cook
Anne Paige
— Nanny
Marjorie Rhodes
— Mrs. Jeffries
Anna Turner
— Mrs. Robey
Everley Gregg
— Viscountess Cardale
Meredith Edwards
— Sergeant Davies
Irene Prador
— Mitzi
Anita Sharp-Bolster
— Miss Gill
Beverley Brooks
— Pam
Brenda Hogan
— Sue's Secretary
Eileen Peele
— Henrietta Gay
Shirley Anne Field
— Girl Working at Taxi Garage
Joan Hickson
— Chemist
Joan Sims
— Ice Cream Seller in the Park
Mona Washbourne
— Librarian
Barbara Windsor
— Young Girl in Chemist
Freda Bamford
— Zoe's Mother
Robert Brown
— Farmer with Shotgun
Fanny Carby
— Nanny in the Park (Uncredited)
Cyril Chamberlain
— Uniformed Police Officer
Peggy Ann Clifford
— Shopkeeper
Guy Deghy
— Erikkson (Uncredited)
Grace Denbigh Russell
— Mrs. Robey's Neighbour (Uncredited)
Dorothy Gordon
— Ice Cream Girl's Friend
Fred Griffiths
— Gamble (Uncredited)