| Episode complete credited cast: |
 | Prince Michael of Kent | - | Himself - Presenter (as HRH Prince Michael of Kent) |
 | Siân Phillips | - | Herself - Narrator (voice) |
 | John Standing | - | Nicholas (voice) |
 | Francesca Annis | - | Alexandra (voice) |
| Rest of cast listed alphabetically: |
| Alexander Avdonin | - | Himself - Geologist |
 | Max Kleinman | - | Himself - Soldier, First World War, Born 1891 |
| Sergei Komarov | - | Himself - Born 1905 |
| Ludmila Krassina-Mathias | - | Herself - Born 1905 |
| Yelena Martynova | - | Herself - Cousin of Dmitri Malamar |
| Valentina Popova | - | Herself - Born 1910 |
| Natalia Pylayeva | - | Herself - Born 1907 |
| Nicholas Romanoff | - | Himself - Prince of Russia |
| Vera Shulina | - | Herself - Born 1908 |
| Vladimir Soloviev | - | Himself - Russian State Prosecutor |
| Boris Tulchinsky | - | Himself - Palace Guard, Born 1895 |
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