From a passport belonging to one of the Cambridge spies to a letter about the Queen’s response to the news of a Soviet agent ...

Exhibits include Guy Burgess’s briefcase, which was left behind as he fled to Moscow, and a 110-year-old lemon used by German ...

Co-curated by the secret service, this new exhibition at the National Archives is richly detailed and wholly fascinating ...

For the first time in MI5's 115-year history, the famous UK spy agency is revealing some of its secrets in a London show ...

A desiccated 110-year-old lemon that played a key role in espionage history is one of the star attractions of a London ...

The MI5: Official Secrets exhibition, which features objects from MI5's private collection alongside declassified documents, ...

A shrivelled lemon at the centre of a First World War spy drama is among dozens of items throwing new light on the secret ...

A battered leather briefcase left behind by Guy Burgess when he fled to Moscow in 1951 is among 20 objects from MI5's ...

The exhibition "MI5: Official Secrets" marks an unprecedented collaboration between the intelligence agency and The National ...