Trailer
Images
 | Colin Baker as The Doctor |
 | Bonnie Langford as Mel Bush |
 | Michael Jayston as The Valeyard |
 | Lynda Bellingham as The Inquisitor |
 | Honor Blackman as Professor Sarah Lasky |
 | Michael Craig as Commodore Travers |
 | Denys Hawthorne as Rudge |
 | Yolande Palfrey as Janet |
 | Malcolm Tierney as Doland |
 | David Allister as Bruchner |
| Tony Scoggo as Grenville |
 | Arthur Hewlett as Kimber |
| Simon Slater as Edwardes |
| Sam Howard as Atza |
| Leon Davis as Ortezo |
| Hugh Beverton as First Guard |
| Barbara Ward as Mutant / Ruth Baxter |
| Mike Mungarvan as Duty Officer |
| Martin Weedon as Second Guard |
| Peppi Borza as First Vervoid |
| Bob Appleby as Second Vervoid |
| Directing | |
| Chris Clough | Director |
Writing | |
| Jane Baker | Writer |
| Philip Baker | Writer |
Production | |
| John Nathan-Turner | Producer |
Writing | |
| John Nathan-Turner | Script Editor |
Sound | |
| Malcolm Clarke | Original Music Composer |
Camera | |
| Alec Wheal | Camera Supervisor |
Costume & Make-Up | |
| Andrew Rose | Costume Design |
Art | |
| Dinah Walker | Production Design |
Costume & Make-Up | |
| Shaunna Harrison | Makeup Artist |
Production | |
| Jane Wellesley | Production Assistant |
| Ian Fraser | Production Manager |
Crew | |
| Dick Mills | Special Sound Effects |
Lighting | |
| Don Babbage | Lighting Director |
Sound | |
| Brian Clark | Sound |
Visual Effects | |
| Danny Popkin | Visual Effects |
Editing | |
| Hugh Parson | Editor |
Visual Effects | |
| Kevin Molloy | Visual Effects |
Sound | |
| Dominic Glynn | Theme Song Performance |
Writing | |
| Eric Saward | Script Editor |
Art | |
| Sid Sutton | Main Title Designer |
