 Bonar ColleanoDan MacDonald | Dan MacDonald |
 Susan ShawPat | Pat |
 Renée AshersonSally | Sally |
 Earl CameronJohnny Lambert | Johnny Lambert |
 Moira ListerMaisie | Maisie |
 Max AdrianCharlie Vernon - acrobat / George | Charlie Vernon - acrobat / George |
 Joan DowlingPamela, Maisie's sister | Pamela, Maisie's sister |
 James Robertson JusticeEngine Room Officer Trotter | Engine Room Officer Trotter |
 Leslie PhillipsHarry | Harry |
 Alfie BassAlf | Alf |
 John LongdenDI Williams | DI Williams |
| MMichael GoldenCustoms Officer Andrews | Customs Officer Andrews |
 Christopher HewettMike | Mike |
| JJohn AdamsPlainclothes Policeman in Squad Car (uncredited) | Plainclothes Policeman in Squad Car (uncredited) |
 John ArnattSquad Car Officer (uncredited) | Squad Car Officer (uncredited) |
| MMae BaconEthel the Barmaid (uncredited) | Ethel the Barmaid (uncredited) |
 Ian BannenGarage attendant (uncredited) | Garage attendant (uncredited) |
 George BensonGeorge (uncredited) | George (uncredited) |
| AArthur BentleyPamela's Boyfriend (uncredited) | Pamela's Boyfriend (uncredited) |
| BBeckett BouldThe Murdered Watchman (uncredited) | The Murdered Watchman (uncredited) |
| JJohn BoxerDetective in Pub (uncredited) | Detective in Pub (uncredited) |
| MMichael CorcoranSam (uncredited) | Sam (uncredited) |
| AArthur CortezJock (uncredited) | Jock (uncredited) |
| DDan CresseyCustoms Officer (uncredited) | Customs Officer (uncredited) |
 David DaviesOfficer on the Dunbar (uncredited) | Officer on the Dunbar (uncredited) |
 Frank ForsythPolice Constable Witnessing Robbery (uncredited) | Police Constable Witnessing Robbery (uncredited) |
| RRowena GregoryMary (uncredited) | Mary (uncredited) |
 Fred GriffithsSailor on Barge (uncredited) | Sailor on Barge (uncredited) |
| PPat HaganSquad Car Officer (uncredited) | Squad Car Officer (uncredited) |
| EEllis IrvingSuperintendent (uncredited) | Superintendent (uncredited) |
