The Cambridge Five and the lemon that cost lives: The work of UK MI5 spies is revealed

The UK's intelligence agency is launching a new exhibition. It features archives of famous MI5 cases. Visitors will be able to see photos, documents and equipment used by spies over the agency's 115 years. Among the archives are previously declassified documents about a Soviet spy who worked in the entourage of Queen Elizabeth II.

Espionner is to observe without being seen, to intercept without leaving any trace. Yet, even the most secret services end up leaving fingerprints. The MI5, the pillar of British internal security since 1909, has long worked in the shadow, its activities protected by the silence of the state. But at the time when the archives become a lever of transparency, the service opens its files for the first time to the general public. An exceptional exhi…