Cuba, recruited to work for MI6 who bamboozles his employers by selling them diagrams of vacuum cleaners, which he persuades MI6 are really diagrams of Soviet missiles. MI6 pressed for Greene to be prosecuted for violating the Official Secrets Act, claiming that he revealed too much about MI6's methods in Our Man in Havana, but it decided against charging Greene out of the fear that prosecuting him would suggest the unflattening picture of MI6 in Our Man in Havana was based on reality. Greene's older brother, Herbert, a professional con-man had briefly worked as a spy for the Japanese in the 1930s before his employers realised that the "secrets" that he was selling them was merely information culled from the newspapers. The bumbling vacuum cleaner salesman Wormold in Our Man in Havana seems to been inspired by Herbert Greene. In The Human Factor, Greene portrayed MI6 again in a highly unsympathetic light, depicting the British government as supporting the apartheid regime of South Africa because it was pro-Western while the book's protagonist, the MI6 officer Maurice Castle, married to a black South African woman, provides information to the KGB to thwart MI6 operations. Much of the plot of The Human Factor concerned a secret plan by the British, American and West German governments to buy up South African gold in bulk in order to stabilise the economy of South Africa, which Greene presented as fundamentally amoral, arguing that the Western powers were betraying their values by supporting the white supremacist South African government. Much controversy ensured when shortly after the publication of The Human Factor it emerged that such a plan had in fact been carried out, which led to much speculation about whatever this was just a coincidence or whatever Greene had more access to secret information than what he led on. There was also much speculation that the character of Maurice Castle was inspired by Philby, but Greene consistently denied this. Other novelists followed a similar path. Len Deighton's anonymous spy protagonist of The IPCRESS File (1962), Horse Under Water (1963), Funeral in Berlin (1964), and others, is a working-class man with a negative view of "the Establishment". Other notable examples of espionage fiction during this period were also built around recurring characters. These include James Mitchell's 'John Craig' series, written under his pseudonym 'James Munro', beginning with The Man Who Sold Death (1964); and Trevor Dudley-Smith's Quiller