Knights from a parallel universe arrive on Earth to find the legendary sword Excalibur. Only the Doctor and Ace, with the assistance of Brigadier Lethbridge-Stewart, can save the Earth from total catastrophe.
| Writing | Ben Aaronovitch | Writer |
| Directing | Michael Kerrigan | Director |
| Production | John Nathan-Turner | Producer |
| Costume & Make-Up | Anushia Nieradzik | Costume Design |
| Sound | Keff McCulloch | Original Music Composer |
| Costume & Make-Up | Juliette Mayer | Makeup Artist |
| Art | Oliver Elmes | Graphic Designer |
| Crew | Alf Joint | Stunt Coordinator |
| Writing | Andrew Cartmel | Script Editor |
| Art | Martin Collins | Production Design |
| Editing | Hugh Parson | Editor |
| Lighting | David Lock | Lighting Director |
| Camera | Alan Jessop | Camera Operator |
| Sound | Martin Broadfoot | Sound |
| Production | Rosemary Parsons | Production Assistant |
| Lighting | Ian Dow | Lighting Director |
| Visual Effects | Dave Bezkorowajny | Visual Effects Designer |
| Sound | Scott Talbott | Sound |
| Camera | Paul Harding | Camera Operator |
| Visual Effects | Dave Chapman | Visual Effects |
| Production | Riitta Lynn | Production Manager |