1980 Jul 18 - 1980 Jul 28
Prime Ministerial Private Office files
PREM19/358
Security (Article by Duncan Campbell in New Statesman on US National Security Agency (NSA) activities at Menwith Hill, North Yorkshire)
| Source: | TNA, PREM19 series |
|---|---|
| Release date: | 2010 Dec 30 |
| Classification: | Secret |
| Page count: | 11 |
PREM19/358 - download whole file (PDF, 6.46 MB)