 | Hilary Mason
Landlady |
 | John Barrie
Detective Inspector Marshall, F Division |
 | John Dunbar
Mr. Franklyn |
 | Geoffrey Frederick
Police Constable Jack, F Divison |
 | Donald Tandy
Ted, Fingerprint Department |
 | Clive Russell
Stevenson, Fingerprint Department |
 | Clive Russell
Stevenson, Fingerprint Department |
 | Bartlett Mullins
Hardcastle |
 | Raymond James
Detective Constable Parker, T Division |
| David Case
Police Constable Smith, T Division |
| David Case
Police Constable Smith, T Division |
 | David Case
Police Constable Smith, T Division |
 | Charles Hill
Fred, Pub Landlord |
 | Clifford Cox
Jenkins |
 | Denis Cleary
Police Constable Brent, F Division (as Denis Cleary) |
 | Fred Ferris
'Chubby' Dawson |
 | Chris Gannon
Bert Williams |
| David Lyn
Detective Sergeant Turner, F Division |
 | Emrys Leyshon
Detective Sergeant Blake, F Division |
 | Peter Cellier
Driver of F Division Patrol Car |
| Colin Morton
Radio Operator, F Division Patrol Car |
 | John Quarmby
Plain Clothes Man |
 | Roy Spencer
Police Constable, Information Room |
 | Reginald Jessup
Annoucer, Information Room |
 | Esmond Webb
CRO Man |
 | Anne Padwick
Woman Police Constable, F Division |
 | Roger Ostime
Map Room Man |
 | Humphrey Heathcote
Chief Inspector, CRO, Scotland Yard |
 | Alan Casley
Assistant MRO (as Allan Casley) |
| Brian Pollitt
Radio Operator, T Division Patrol Car |
 | Geoffrey Matthews
Commentator |
 | Louis Haslar
Fingerprint Department (as Louis Hasler) |
| Robert Weeden
Fingerprint Department |
 | John Scott Martin |
| Brian Vaughan |