World War I spies for the United Kingdom

Sir Robert Hamilton Bruce Lockhart, KCMG (2 September 1887 – 27 February 1970) was a British diplomat, journalist, author, and secret agent. His 1932 book Memoirs of a British Agent became an international bestseller by telling of his experiences in Russia in 1918 following the Bolshevik Revolution. He left the country after he was accused of having led a failed plot to assassinate Vladimir Lenin, the so-called Ambassadors' plot, a charge which he always denied. Later research suggests that the "Lockhart Plot" was a sting operation orchestrated by Felix Dzerzhinsky with the goal of discrediting the British and French governments.