| Michael Caine (Le major John Tarrant) |
| Joseph O'Connor (Sir Edward Julyan) |
| Donald Pleasence (Cedric Harper) |
| John Vernon (McKee) |
| Janet Suzman (Alex Tarrant) |
| Delphine Seyrig (Ceil Burrows) |
| Joss Ackland (Le superintendant Wray) |
| Clive Revill (Alf Chestermann) |
| Edward Hardwicke (Mike McCarthy) |
| David Daker (Thickset) |
| Denis Quilley (Bateson) |
| Paul Moss (David Tarrant) |
| Mark Praid (James Stroud) |
| George Cooper (Pincus) |
| Preston Lockwood (Ilkeston) |
| Catherine Schell (Lady Julyan) |
| Derek Lord (Sellars) |
| Maureen Pryor (Jane Harper) |