1 Tymor
4 Pennod
Secret Society
- Blwyddyn: 1987
- Gwlad: United Kingdom
- Genre: Documentary
- Stiwdio: BBC UKTV
- Allweddair: journalist, society, investigation, politics, government, britain, security, military
- Cyfarwyddwr: Duncan Campbell
- Cast: James Anderton, Duncan Campbell
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