Nearly ten years in the making, This Man Alone is a brand-new feature-length documentary on one of television's highest-rated series. Featuring a remarkable central performance by Edward Woodward, Callan grew from a cult favourite into one of Britain's favourite shows, and this documentary tells the story of its creation and development, its success on television and extended life in film and books. Narrated by Peter Woodward, This Man Alone features contributions from Peter Mitchell, Reginald Collin, Mike Vardy, James Goddard, Piers Haggard, Patrick Mower, Trevor Preston and more
| Actor | Role |
|---|---|
 Peter WoodwardNarrator | Narrator |
 Patrick MowerHimself | Himself |
 Clifford RoseHimself | Himself |
 Piers HaggardHimself | Himself |
| TTrevor PrestonHimself | Himself |
| MMike VardyHimself | Himself |
| JJames GoddardHimself | Himself |
 Robert Banks StewartHimself | Himself |
| RReginald CollinHimself | Himself |
| PPeter MitchellHimself | Himself |
 Edward WoodwardHimself (archive) | Himself (archive) |
 Russell HunterHimself (archive) | Himself (archive) |
 Anthony ValentineHimself (archive) | Himself (archive) |
 William SquireHimself (archive) | Himself (archive) |
| JJames MitchellHimself (archive) | Himself (archive) |