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Document release

File release: Cold War Cambridge spies Burgess and Maclean

Today we are releasing over 400 files from the Security Service (MI5), Foreign and Commonwealth Office and Cabinet Office which focus on Cold War investigations...

Tags: cold war, espionage, mi5, spies

Document release

Latest top secret MI5 files released

Today we have made available to the public 102 previously top secret files from the UK Security Service – sometimes known as MI5. The files reveal...

Tags: cold war, document release, file release, mi5, second world war, security service

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Previous document releases

Read more about files we've released in previous years.