For most of its history, MI5 has worked almost entirely in secret but since the 1990s, it has been releasing files to The National Archives. Co-authored by archivists Mark Dunton and Stephen Twigge, their new book The MI5 Archive: Official Secrets showcases the incredibly rich collection of MI5 files held by The National Archives.
Join Mark Dunton, contemporary specialist at The National Archives and co-author of the book as he discusses how the book came about and some of the riveting stories of subversion and espionage to be found within.
Mark Dunton is a principal records specialist in contemporary records at The National Archives with a particular interest in 20th-century British history including Prime Minister’s Office records, Cabinet Papers, and the records of the Security Service (MI5). Mark was the lead curator for Protect and Survive: Britain’s Cold War Revealed (2019) and MI5: Official Secrets (2025) at The National Archives.
Pre-order The MI5 Archive: Official Secrets from our online bookshop here: shop.nationalarchives.gov.uk/products/the-mi5-archive-official-secrets
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