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Notorious Soviet spy's passport part of unique MI5 exhibition
A passport belonging to one of the Cambridge spies, a 110-year-old lemon used for invisible ink and a letter about the Queen's response to news of a Soviet agent in Buckingham Palace are among MI5 artefacts on display in a "groundbreaking" new exhibition.
A passport belonging to one of the Cambridge spies, a 110-year-old lemon used for invisible ink and a letter about the Queen's response to news of a Soviet agent in Buckingham Palace are among MI5 artefacts on display in a "groundbreaking" new exhibition.
