The Doctor and Ace head for the Psychic Circus on the planet Segonax, where they meet a disparate group of performers and visitors, including a self-centred explorer named Captain Cook, his companion Mags and a biker known as Nord.
Unfortunately the movie Doctor Who: The Greatest Show in the Galaxy is not yet available on HBO Max.
| Directing | Alan Wareing | Director |
| Writing | Stephen Wyatt | Writer |
| Writing | Andrew Cartmel | Script Editor |
| Production | John Nathan-Turner | Producer |
| Crew | Mike Tucker | Special Effects Assistant |
| Camera | Barry Chaston | Camera Operator |
| Editing | Hugh Parson | Editor |
| Sound | Keff McCulloch | Theme Song Performance |
| Sound | Mark Ayres | Original Music Composer |
| Costume & Make-Up | Rosalind Ebbutt | Costume Design |
| Art | David Laskey | Production Design |
| Art | Oliver Elmes | Graphic Designer |
| Costume & Make-Up | Denise Baron | Makeup Artist |
| Camera | Alan Jessop | Camera Operator |
| Lighting | Ian Dow | Lighting Director |
| Sound | Doug Whittaker | Sound |
| Production | Alexandra Todd | Production Assistant |
| Production | June Collins | Production Assistant |
| Production | Ian Fraser | Production Manager |
| Production | Gary Downie | Production Manager |
| Crew | Dick Mills | Special Sound Effects |
| Camera | Alec Wheal | Camera Supervisor |
| Lighting | Henry Barber | Lighting Director |
| Lighting | Don Babbage | Lighting Director |
| Sound | Scott Talbott | Sound |
| Visual Effects | Dave Chapman | Visual Effects |
