From Operation Mincemeat: How a Dead Man and a Bizarre Plan Fooled the Nazis and Assured an Allied Victory, by Ben Macintyre (Crown, 2010), Kindle pp. 84-87:
Montagu and Cholmondeley were blasé about the danger of being found out by an enemy agent in Britain, for the simple reason that they did not believe there were any. “There was almost complete security,” wrote Montagu. “We were able to put over what we liked to the enemy.” True, of the several hundred enemy spies dropped, floated, or smuggled into Britain, all but one was picked up and arrested: the exception was found dead in a bunker after committing suicide.
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Montagu would cycle home every evening, his briefcase full of secrets, complacent that he was “the only deceptioneer in daily contact with the whole of special intelligence” and that his secrets were perfectly safe. Yet there were numerous spies living in London from supposedly neutral countries happy to furnish information to the Axis powers. Ewen Montagu never knew it, but there was one spy operating under his nose, a man with whom he shared a taste for exotic cheese, a love of table tennis, and both parents.
Ivor Montagu was addicted to founding, and joining, different clubs. From the Cheese Eaters League and the English Table Tennis Association, he had graduated to the Association of Cine Technicians, the Zoological Society, Marylebone Cricket Club, the editorial board of Labour Monthly, the World Council of Peace, the Friends of the Soviet Union, Southampton United Football Club, the Society for Cultural Relations with Soviet Russia, and chairmanship of the Woolwich-Plumstead branch of the Anti-war Congress.
He had also joined a less public and even more exclusive club, as an agent for Soviet military intelligence.
In part to antagonize his patrician parents, Ivor Montagu had from an early age displayed a keen “enthusiasm for all things Russian” and a penchant for radical politics. In 1927, the twenty-three-year-old Ivor was contacted by Bob Stewart, a founding member of the British Communist Party and a recruiter of Soviet agents in Britain. Stewart told Ivor, “We have had a request from the Communist International for you to go at once to Moscow. How soon can you leave?” In Moscow, Ivor was feted and flattered: he played table tennis in the Comintern building with “the keenest players in Moscow,” went to the Bolshoi, and watched the revolutionary parade from a VIP stand in Red Square. Someone in the upper reaches of the Soviet state was taking good care of Ivor Montagu.
Back in Europe, Ivor’s film career blossomed, as did his interests in table tennis, small rodents, and Soviet movies. At the same time, his commitment to communism deepened. In 1929, he began to correspond with Leon Trotsky, the Bolshevik revolutionary expelled from the Communist Party and now living in exile on the Turkish island of Prinkipo.
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The meeting with Trotsky marked a turning point. Ivor Montagu was attracted to this “fascinating and commanding personality” but “repelled by his self-admiration,” the raw ambition of the revolutionary in exile: “I felt I understood now why he was impossible in a party, that his personality swamped his judgement.” Ivor was not yet thirty, but he was already a party disciplinarian and a fully committed Stalinist. Trotsky knew that Ivor was a willing tool of the Soviet regime. In 1932, he wrote: “Ivor Montagu has, or had, some personal sympathy for me, but now he is even on that small scale paralysed by his adherence to the party.”
That adherence was now absolute and permanent: he gave speeches, wrote pamphlets, and made films in support of communism. The more covert, and more dangerous, manifestations of that party obedience remained secret for the rest of his life.
Far Outliers 