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MI5: Official Secrets closed on 23 November 2025

We’re excited to announce that our next exhibition, Love Letters, opens on 24 January 2026.
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Past exhibition

MI5: Official Secrets

A groundbreaking exhibition in partnership with the Security Service.
Date
5 April to 23 November 2025
Price
Free

About MI5: Official Secrets

MI5: Official Secrets was a major exhibition that stepped inside the hidden world of MI5 and explored the extraordinary stories behind the security of a nation.

It is now permanently closed. For the first time, MI5’s history was on display to the public, made possible through an unprecedented partnership between the Security Service and The National Archives.

Visitors explored the ever-changing world of espionage and security threats through original case files, photographs and papers, alongside the real equipment used by spies and spy-catchers over MI5’s 115-year history.

From counter-espionage and daring double-agents during the world wars, to chilling Cold War confessions and the counter-terrorism of recent times, this historic exhibition went behind the scenes of one of Britain’s most iconic institutions.

Review from The Daily Telegraph

5 stars

Richly detailed and wholly fascinating

Spy stories

Keen to explore espionage right now? Read articles on the exhibition’s themes.

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