Melita Norwood (1912-2005), born Melita Sirnis in Bournemouth, England, was a long-serving Soviet agent inside British atomic research. She worked from 1932 as a secretary at the British Non-Ferrous Metals Research Association in London, which took part in Britain’s wartime atomic bomb program (Tube Alloys). She was recruited by Soviet intelligence in 1937 and passed documents for decades; the KGB knew her by the code name HOLA.

Norwood was exposed in September 1999, when material from the archive smuggled out by former KGB archivist Vasili Mitrokhin was published. Then 87, she acknowledged her role and said she had acted for political reasons. The British government decided not to prosecute her. Her case showed how long a well-placed, ideologically motivated source with modest access could operate undetected.

Sources

• Andrew, Christopher, and Vasili Mitrokhin. The Sword and the Shield: The Mitrokhin Archive and the Secret History of the KGB. Basic Books, 1999.
• Burke, David. The Spy Who Came in from the Co-op: Melita Norwood and the Ending of Cold War Espionage. Boydell Press, 2008.

Summary entry. A fuller, document-based profile is in preparation.