 Leslie BanksJohn Barrington | John Barrington |
 Jeanne De CasalisMrs. Barrington | Mrs. Barrington |
 Carla LehmannHelen Barrington (as Carla Lehman) | Helen Barrington (as Carla Lehman) |
 Alastair SimCharles Dimble | Charles Dimble |
 John MillsFlt·Lieut. Perry | Flt·Lieut. Perry |
 George ColeRonald | Ronald |
 Michael WildingAlan Trently | Alan Trently |
 Frank CellierJohn Forest | John Forest |
 Muriel AkedMiss Fernery | Miss Fernery |
 Wally PatchEvans | Evans |
 Muriel GeorgeMrs. Trimm | Mrs. Trimm |
 Hay PetrieDr. Truscott | Dr. Truscott |
 Catherine LaceyMrs. Stokes | Mrs. Stokes |
| AAnnie EsmondLady Wrapping Parcels For The Bazaar (uncredited) | Lady Wrapping Parcels For The Bazaar (uncredited) |
 Peter GawthorneSenior RAF Officer (uncredited) | Senior RAF Officer (uncredited) |
 Arthur HamblingScotland Yard Inspector (uncredited) | Scotland Yard Inspector (uncredited) |
| RRoddy HughesGerman Agent (uncredited) | German Agent (uncredited) |
| SSydney KingMinistry Official (uncredited) | Ministry Official (uncredited) |
 Brefni O'RorkeScottish Police Inspector (uncredited) | Scottish Police Inspector (uncredited) |
| CCharles RolfeGerman Agent (uncredited) | German Agent (uncredited) |
 Sydney TaflerRAF Officer (uncredited) | RAF Officer (uncredited) |
| BBen WilliamsScottish Fisherman (uncredited) | Scottish Fisherman (uncredited) |
