| Name | Character | Episodes |
|---|---|---|
| Barry Foster | Kaiser Wilhelm II | 13 |
| Michael Hordern | Narrator | 13 |
| Charles Kay | Tsar Nicholas II | 7 |
| Patrick Stewart | Vladimir Lenin | 3 |
| Laurence Naismith | Emperor Franz Josef I of Austria-Hungary | 3 |
| Freddie Jones | Witte | 2 |
| Curd Jürgens | Otto von Bismarck | 2 |
| Tony Jay | Tsar Alexander III | 2 |
| Michael Bates | Von Ludendorff | 2 |
| Lynn Farleigh | Krupskaya | 2 |
| Gemma Jones | Princess Vicky | 2 |
| Isla Blair | Grand Duchess Ella | 2 |
| Denis Lill | 'Fritz', Prince Frederick William | 2 |
| Maurice Denham | Kaiser Wilhelm I | 2 |
| Marius Goring | Von Hindenburg | 2 |
| Robert Brown | Uncle Serge | 2 |
| Peter Dyneley | Von Bulow | 2 |
| John Welsh | Archbishop | 1 |
| T. P. McKenna | Count Conrad von Hotzendorf | 1 |
| Peter Vaughan | Izvolsky | 1 |
| Miriam Margolyes | Anna Vyrubova | 1 |
| Rosalie Crutchley | Miehen, the Grand Duchess Vladimir | 1 |
| Jan Francis | Kschessinska | 1 |
| John Bennett | Georges Clemenceau | 1 |
| Charles Gray | Rodzianko | 1 |
| Andrew Keir | Wickham Steed | 1 |
| Frank Middlemass | Stolypin | 1 |
| Michael Aldridge | Rasputin | 1 |
| Peter Woodthorpe | Archduke Franz-Ferdinand | 1 |
| Michael Sheard | Losehek | 1 |
| Kenneth Colley | Father Gapon | 1 |
| Miles Anderson | Young Franz Josef of Austria-Hungary | 1 |
| Ed Devereaux | Purtales | 1 |
| David McKail | Mackenzie | 1 |
| Roger Hammond | Albrecht | 1 |
| Griffith Jones | Hintze | 1 |
| Griffith Jones | Hintze (uncredited) | 1 |
| John Moffatt | Aehrenthal | 1 |
| Frederick Jaeger | Holstein | 1 |
| Paul Eddington | Plekhanov | 1 |
| George Merritt | Ketterl | 1 |
| Emrys James | Count Taaffe | 1 |
| Colin Baker | Crown Prince Willie | 1 |
| Frank Thornton | Prince Albert | 1 |
| Vernon Dobtcheff | Count Stookau | 1 |
| Michael Kitchen | Trotsky | 1 |
| Nigel Stock | General Alexiev | 1 |
| Ursula Howells | Empress Maria Fyodorovna | 1 |
| John Turner | Prince Mirsky | 1 |
| John Nightingale | Cousin Serge | 1 |
| Hugh Burden | Protopopov | 1 |
| John Phillips | Grand Duke Nicholas | 1 |
| Derek Francis | Edward VII of England | 1 |
| Peter Copley | Bethmann-Hollweg | 1 |
| Mary Wimbush | Zasulich | 1 |
| Frank Mills | A.F. Trepov | 1 |
| Erik Chitty | Hertling | 1 |
| Diane Keen | Young 'Sisi', Empress Elizabeth of Austria | 1 |
| Sandor Elès | Count Andrassy | 1 |
| John Barcroft | Eulenberg | 1 |
| Michael Bryant | Ratchkowsky | 1 |
| Bruce Purchase | Von Plehve | 1 |
| Olaf Pooley | Police President Baron Krauss | 1 |
| Jenny Till | Mounia | 1 |
| Pamela Brown | Archduchess Sophia | 1 |
| Eve Pearce | Empress Dona | 1 |
| Basil Henson | Von Moltke | 1 |
| Geoffrey Toone | Groener | 1 |
| John Quarmby | Lamsdorf | 1 |
| Nora Swinburne | Katharina Schratt | 1 |
| John Stratton | Doctor | 1 |
| Kevin Stoney | Father John | 1 |