 David HemmingsBenjamin Oakes / Walter Leybourne | Benjamin Oakes / Walter Leybourne |
 Joanna PettetJosephine Pacefoot | Josephine Pacefoot |
 George SandersSir Francis Leybourne | Sir Francis Leybourne |
 Dany RobinBabette | Babette |
 Warren MitchellCount Pandolfo | Count Pandolfo |
 John BirdHome Secretary | Home Secretary |
 William RushtonSylvester Wall | Sylvester Wall |
 Bill FraserInspector MacPherson | Inspector MacPherson |
 Avril AngersFlora's Mother | Flora's Mother |
 Maurice DenhamEditor, The Times | Editor, The Times |
 Martita HuntHeadmistress | Headmistress |
 Betty MarsdenFelicity | Felicity |
 Hugh BurdenLord Tennyson | Lord Tennyson |
 Arnold DiamondCharles Dickens | Charles Dickens |
| TTessie O'SheaMusic Hall Singer | Music Hall Singer |
 Clement FreudMr. Mason | Mr. Mason |
| CCarol FridayFlora | Flora |
 Jan HoldenLady Dilke | Lady Dilke |
 John CleeseJones (uncredited) | Jones (uncredited) |
 Veronica CarlsonLilly (uncredited) | Lilly (uncredited) |
 Peter JeffreySherlock Holmes (uncredited) | Sherlock Holmes (uncredited) |
 Thorley WaltersDoctor Watson (uncredited) | Doctor Watson (uncredited) |
 Penny SpencerEvelyn (uncredited) | Evelyn (uncredited) |
 Queenie WattsOld Crone (uncredited) | Old Crone (uncredited) |
 Margaret NolanBusty Prostitute (uncredited) | Busty Prostitute (uncredited) |
 Milton ReidHenchman (uncredited) | Henchman (uncredited) |
 Ferdy MayneFirst Petitioner (uncredited) | First Petitioner (uncredited) |
 Eric Barker(uncredited) | (uncredited) |
 Joe LynchPoliceman (uncredited) | Policeman (uncredited) |
 William MervynCabinet Minister (uncredited) | Cabinet Minister (uncredited) |
