1979 Jun 21 - 1991 Feb 10
Prime Ministerial Private Office files
PREM19/3536
Security (Prime Minister's comments on codeword documents)
| Source: | TNA, PREM19 series |
|---|---|
| Release date: | Retained |
| Classification: | Retained Sec 3.4 |
| Page count: | |
| Themes: | Security services & intelligence |