| Name | Character | Episodes |
|---|---|---|
| Haydn Gwynne | Dr. B.B. Miller | 4 |
| Ian McNeice | Leather Hardbones | 2 |
| Clive Merrison | Professor Crow | 2 |
| Paul Bown | Captain | 2 |
| Kerry Shale | Hepworth | 2 |
| Julie T. Wallace | Lady Chalmerston | 1 |
| Harry Jones | Prisoner | 1 |
| Gavin Richards | Witchfinder General | 1 |