Mark Dunton

Principal Records Specialist at the National Archives and lead curator of the MI5: Official Secrets exhibition

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Sep 2026Double Agents, Dead Drops & Declassified Files: Inside the MI5 Archive of Official SecretsNational Archives experts Mark Dunton and Stephen Twigge open MI5's declassified files: the lemon spy, Sidney Street, the Double Cross system, Profumo and tapping Edward VIII's phone.Transcript

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