- Script Editor: Terrance Dicks;
- Writer: Robert Holmes;
- Produced by: Barry Letts;
- Director: Barry Letts;
- Designer: Ian Watson;
- Incidental Music: Dudley Simpson;
- Action: Havoc (3-4);
- Circus Scenes: Courtesy of Roberts Brothers;
- Brigadier Lethbridge-Stewart: Nicholas Courtney;
- Sergeant Benton: John Levene;
- Jo Grant: Katy Manning;
- Captain Yates: Richard Franklin;
| Channel | Episode | Title | Date | Viewers | Position |
| BBC 1 |
279 |
Episode One |
Sat 2 Jan 1971 |
217:15 - 17:40 |
7.3M |
78th |
| BBC 1 |
282 |
Episode Four |
Sun 3 Jan 1971 |
317:15 - 17:40 |
8.4M |
59th |
| BBC 1 |
280 |
Episode Two |
Sat 9 Jan 1971 |
917:15 - 17:40 |
8.0M |
71st |
| BBC 1 |
281 |
Episode Three |
Sat 16 Jan 1971 |
1617:15 - 17:40 |
8.1M |
58th |
This programme has not been repeated.
- Robert Brothers Circus, Edmonton;
- Hodgmore Wood, Bucks;
- Black Park Cottage, Fulmer, Bucks;
- Dunstable, Bedfordshire;
- Television Centre Studio 6;
- Television Centre Studio 8;
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