 | Tom Baker als The Doctor |
 | Bernard Horsfall als Chancellor Goth |
 | Peter Pratt als The Master |
 | Llewellyn Rees als The President |
 | Hugh Walters als Commentator Runcible |
 | Angus MacKay als Cardinal Borusa |
 | George Pravda als Castellan Spandrell |
 | Erik Chitty als Co-Ordinator Engin |
| Derek Seaton als Commander Hilred |
| Maurice Quick als Gold Usher |
| John Dawson als Time Lord |
 | Michael Bilton als Time Lord |
| David Maloney | Director |
| Philip Hinchcliffe | Producer |
| Robert Holmes | Writer |
| Robert Holmes | Script Editor |
| Dudley Simpson | Original Music Composer |
| Brian Clemett | Lighting Director |
| James Acheson | Costume Design |
| Fred Hamilton | Camera Operator |
| Graham Bedwell | Sound |
| Ian McKendrick | Editor |
| Dick Mills | Special Sound Effects |
| Joan Ellacott | Costume Design |
| Jean Williams | Makeup Artist |
| Clive Gifford | Sound |
| Roger Murray-Leach | Production Design |
| Terry Walsh | Stunt Double |
| Terry Walsh | Stunt Coordinator |
| Nicholas John | Production Assistant |
| Len Hutton | Visual Effects Designer |
| Peter Day | Visual Effects Designer |
