1988 Apr 5 - 1992 Jul 2
Prime Ministerial Private Office files
PREM19/3661
Downing Street (Replacement of telephone switchboard: modernisation of telecommunications; telephone systems at No. 10) (Part 2)
| Source: | TNA, PREM19 series |
|---|---|
| Release date: | Temporarily Retained by Department |
| Classification: | |
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