A collection of never-before-seen files, photographs and items from MI5's own archives are going on display for the first time, lifting the lid on how spies operate ...

He was a member of the Cambridge Five spy ring and fled to Moscow with fellow spy Donald Maclean in 1951 due to fears of being discovered. None of the Cambridge Five were ever prosecuted for spying.

He had been recruited by the Soviets while he was at the University of Cambridge, joining a spy ring that included other infamous double agents Donald Maclean, Guy Burgess and Kim Philby.

MI5 reveals never-before-seen spy secrets in National Archives Exhibition - Exhibits include Guy Burgess’s briefcase, which was left behind as he fled to Moscow, and a 110-year-old lemon used by ...

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.

Amid fears of arrest and that their spy ring was ... “Look, Donald’s in trouble, and I must contact him at once”. Burgess’s plan was to wander into Maclean’s office in the Foreign ...

The exhibition "MI5: Official Secrets" marks an unprecedented collaboration between the intelligence agency and The National Archives, offering the public a first-ever glimpse into MI5's classified ...