- Writer:
- Ted Willis
- Designer:
- Frederick Knapman
- Production:
- Douglas Moodie
- P.C. George Dixon:
- Jack Warner
- Mary:
- Jeannette Hutchinson
- Sgt Grace Millard:
- Moira Mannion
- Det-Sgt Andy Crawford:
- Peter Byrne
- Det-Con Hughes:
- Graham Ashley
- P.C. Lauderdale:
- Geoffrey Adams
- Sergeant Flint:
- Arthur Rigby
- Cadet Jamie MacPherson:
- David Webster
- P.C. Nightingale:
- David Phethean
- Hugh David:
- Gregory Scott
- Nancy:
- Dorothy Casey
- Will Bingham:
- Frank Atkinson
- Det-Insp Cherry:
- Robert Cawdron
- Det-Insp Jones:
- Desmond Llewelyn
- Mrs Stokes:
- Rose Hill
- Reg Stokes:
- John Dearth
- Pam Stokes:
- Patricia Wilson
- Duffy Clayton:
- Harold Scott
- Pym:
- Ferdy Mayne
- Baby:
- Bernadette Milnes
- Maria:
- Camilla Hasse
- Singers:
- Metropolitan Police Service Choir
- Choir conductor:
- Malcolm Parker
