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

14 (UPI) --Documents newly declassified by MI5, Britain's internal intelligence ... that a member of her staff had spied for the then-Soviet Union. The secret files record how the country's ...

Papers released by MI5 show that although Blunt confessed to them he had spied for the Russians during World War Two, the ...

The files about Anthony Blunt, one of the late monarch's most senior advisers, were part of a trove of MI5 intelligence agency ... spilled secrets to the Soviet Union from the heart of the UK's ...

Documents reveal how the monarch was not told the full story about Anthony Blunt, a Soviet mole inside MI5 and member of the Cambridge spy ring, until nearly a decade after his confession ...

Stewart Purvis leads guided walks of Hampstead showing tourists where the spies who leaked state secrets lived and met ...

The files about royal art historian Anthony Blunt are among a trove from the intelligence agency MI5 released Tuesday ... whose members spilled secrets to the Soviet Union from the heart of ...

Historian Christopher Andrew says in the official history of MI5 that the queen had previously ... whose members spilled secrets to the Soviet Union from the heart of the U.K. intelligence ...