Official Secrets' will feature original case files, photographs and papers, alongside authentic espionage equipment ...

Historian and exhibition curator Mark Dunton speaks about special files that will form part of a special exhibition at the National Archives titled 'MI5: Official Secrets', featuring case files ...

Rookie wartime MI5 "watchers" were advised they needed to be prepared to offer a big tip if they had to tell a taxi driver to "follow that cab" when pursuing a suspect, newly declassified documents ...

A closer look at recently declassified MI5 files on the intelligence failure surrounding the five "Cambrdige spies" ...

A World War II-era guide to tailing a target, and files on notorious double agents such as Kim Philby, feature in MI5: ...

Papers released by MI5 show that although Blunt confessed to them he had spied for the Russians during World War Two, the late queen herself was not officially told for nearly nine years.

The files about royal art historian Anthony Blunt are among a trove from the intelligence agency MI5 released Tuesday by Britain's National Archives. They shed new light on a spy ring linked to ...

These instructions, part of a declassified training booklet for rookie operatives, are now on display at the National Archives in Kew, west London, as part of a new exhibition on MI5’s wartime ...

That was the advice issued to rookie MI5 “watchers” whose job it was ... focusing on the work of M15 due to open at the National Archives in Kew, west London, in the spring.

The files about royal art historian Anthony Blunt are among a trove from the intelligence agency MI5 released Tuesday by Britain’s National Archives. They shed new light on a spy ring linked to ...