1986 Apr 17 - 1988 May 27
Prime Ministerial Private Office files
PREM19/2484
Security (Government Communications Headquarters (GCHQ): changes in funding, status and staffing at) (Part 5)
| Source: | TNA, PREM19 series |
|---|---|
| Release date: | Retained |
| Classification: | Temporarily retained by Department |
| Page count: |