Summary
The secrets of 100 years of spying and counter-intelligence work have been laid bare with the publication of the first official history of the Security Service, M15.
The Defence of the Realm, by Cambridge historian Professor Christopher Andrew, was released to mark the centenary of the founding of the agency in the early weeks of October 1909.See the full content of this document
Extract
100 Yes Rs of Spying
It ranges from its very first days...
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