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

The National Archives has released declassified MI5 files, including the confession of a civil servant who worked in the ...

Queen Elizabeth II was not officially informed for nearly a decade that Anthony Blunt was a Soviet spy, newly declassified documents reveal.

Britain’s National Archives on Tuesdayreleased declassified MI5 domestic counterintelligence agency files containing the confessions of notorious double agents known as the “Cambridge Five” who spied ...

The files confirm that Philby recruited Donald Maclean in 1934, and how Guy Burgess, Anthony Blunt and the fifth spy, John Cairncross, agreed to work for Russian intelligence soon afterwards.

Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross, part of the "Ring of ... "She took it all very calmly and without surprise," it said. Cairncross, the last of the spy ...

The Cambridge Five consisted of Harold ‘Kim’ Philby, Guy Burgess, Donald Maclean, Anthony Blunt and John Cairncross, who together made up the most infamous spy ring of the 20th century. They were all ...

Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross ... and without surprise," it said. Cairncross, the last of the spy ring to be publicly identified in the 1990s ...