- Unknown:
- Edmond Rostand
- Broadcasting By:
- Clemence Dane
- Unknown:
- Arthur Ridley
- Unknown:
- Henry Oscar
- Unknown:
- Eric Anderson.
- Unknown:
- Preston Lockwood
- Unknown:
- Eric Lugg.
- Unknown:
- Dorothy Smith
- Unknown:
- Duncan McLntyre
- Unknown:
- Antony Kearey
- Unknown:
- Wyndham . Milligan
- Unknown:
- Virginia Winter
- Unknown:
- David Stevens
- Unknown:
- Seymour Green
- Composed By:
- Richard Addinsell
- Conducted By:
- John Hollingsworth
- Produced By:
- Val Gielgud
- Narrator:
- Clemence Dane
- Franz, the Duke of Reichstadt, Napoleon's son:
- Marius Goring
- Flambeau, a French Grenadier:
- Arthur Young
- Metternich, the Chancellor of Austria:
- Leon Quartermaine
- Francis, Emperor of Austria:
- Victor Pietti
- Prokesch, the Duke's personal friend:
- David Peel
- Tiburce de Lorget an exile in Austrian pay:
- Donald Pleasence
- Count Dietrichstein, the Duke's tutor:
- Raf de la Torre
- Baron d'Obenaus. the Duke's history tutor:
- Howieson Culff
- Count Bombelles, in attendance on Marie Louise:
- Norman Mitchell
- General Hartmann. in attendance on the Duke:
- Richard Williams
- Count Sedlinsky. Chief of the Austrian Police:
- Reginald Thorne
- Marie Louise, Duchess of Parma Napoleon's wife:
- Rachel Gurney
- Countess Camerata, Napoleon's niece:
- Grizelda Hervey
- Therese de Lorget Tiburce's sister:
- Elisabeth London
- Fanny Elssler, a dancer:
- Diana Wilding
- The Archduchess Marie Louise's sister:
- Joan Hart
