The Last Cambridge Spy

This biography explores the life and espionage activities of John Cairncross, a member of the notorious Cambridge spy ring who leaked crucial secrets from Bletchley Park, MI6, and the Treasury to the Soviet Union. Drawing on newly released archival materials, it reveals the significant impact of his actions on historical events and aims to shed light on an otherwise overlooked figure. Despite his role in a widely known spy ring, Cairncross’s story has remained largely untold until now.