| Name | Character | Episodes |
|---|---|---|
| Philip Madoc | Lutzig | 11 |
| Robert Hardy | Abwehr Sergeant Gratz | 10 |
| Leslie Schofield | Schneibel | 5 |
| Brian Cox | Anton | 3 |
| John Savident | Raoul | 3 |
| Mark Dignam | Reichwein | 3 |
| George Sewell | Allard | 3 |
| Jack Watson | Zander | 3 |
| Christian Rodska | Stefan | 3 |
| Tony Beckley | Hochler | 2 |
| Richard Hurndall | General von Trenow | 2 |
| John Phillips | Klintzch | 2 |
| Ian McCulloch | David Mainwaring | 2 |
| Nerys Hughes | Francine | 2 |
| Royston Tickner | Biedermann | 2 |
| Michael Forrest | Louis | 2 |
| John Collin | Paco | 1 |
| Barry Stanton | Buchner | 1 |
| John Normington | Dostler | 1 |
| Jerome Willis | Major Schneider | 1 |
| T. P. McKenna | Louis Sampere | 1 |
| Julian Glover | Paul | 1 |
| Rosalie Crutchley | Hortense | 1 |
| David Burke | Beauchamps | 1 |
| Andrew Keir | Robespierre | 1 |
| Peter Woodthorpe | Sergeant Adler | 1 |
| Leslie French | Dr. Davalle | 1 |
| Moira Redmond | Yvette | 1 |
| Brian Cant | German Sergeant | 1 |
| Peter Cellier | Louis | 1 |
| William Marlowe | Michel | 1 |
| Bernard Archard | Lemaitre | 1 |
| David Horovitch | Kurt | 1 |
| Richard Warner | Loeffner | 1 |
| Glynn Edwards | Emile Boudin | 1 |
| Geoffrey Whitehead | Spiegel | 1 |
| Geoffrey Whitehead | Captain Spiegel | 1 |
| James Maxwell | Egon | 1 |
| Ann Lynn | Diana | 1 |
| Maria Aitken | Madame Leonard | 1 |
| Yootha Joyce | Denise | 1 |
| David Webb | Linz | 1 |
| Roy Boyd | Maquis Leader | 1 |
| George Camiller | Phillipe | 1 |
| Paul Humpoletz | Jean-Baptiste | 1 |
| Madge Ryan | Celestine Moussac | 1 |
| Peter Copley | Martin | 1 |
| Derek Newark | Henri | 1 |
| Reginald Marsh | Jean Pierre Lasalle | 1 |
| Gerald James | Vigny | 1 |
| Joseph O'Conor | Von Gebhardt | 1 |
| Edward Kelsey | Bonnefoy | 1 |
| Sandor Elès | Helmut | 1 |
| Peggy Ann Wood | Mme. Simon | 1 |
| John Crocker | Henri - Street Vendor | 1 |
| John Crocker | Henri | 1 |
| Derek Bond | Peterson | 1 |
| David Quilter | German Officer | 1 |
| George Innes | Voigt | 1 |
| Reg Lye | Georges | 1 |
| Jeffry Wickham | SS Man | 1 |
| George Murcell | Franco | 1 |
| Stephen Lewis | Goffre | 1 |
| Graham Ashley | Legouve | 1 |
| Marc Boyle | 1 | |
| Michael Beint | German Sergeant | 1 |
| Robert Russell | Todt | 1 |
| Paul Darrow | Eddie | 1 |
| Paul Dawkins | Auguste | 1 |
| Max Faulkner | Naval Officer | 1 |
| Milton Johns | Renard | 1 |
| Geoffrey Russell | Colonel Wilmott | 1 |
| Nora Swinburne | The Countess | 1 |
| Terry Duggan | Verdon | 1 |
| Peter Hutchins | German Guard | 1 |
| Terence Lodge | Stepp | 1 |
| Clifford Parrish | Inspector | 1 |
| Dennis Chinnery | Ramaud | 1 |
| Dudley Jones | Ticket Collector | 1 |
| Iain Cuthbertson | Helldorf | 1 |
| Graham James | Mark | 1 |
| Stefan Gryff | Petit | 1 |
| Bernard Hepton | Simon | 1 |
| John Gugolka | Philippe | 1 |