Guy Molesworth Kindersley (28 February 1876 – 30 November 1956) was a Conservative Party politician in the United Kingdom who represented Hitchin, Hertfordshire.
Kindersley, unaware of the plot, took the letter to the Daily Mail, and its publication is claimed to have had devastating results for the Labour Party at the 1924 election.
It is now known through British government and intelligence records that everything the letter contained had been common knowledge since the creation of the Communist Party of Great Britain on 31 July 1920.
To claim that the British government did not know the mandate of the Soviet Comintern and the real purpose of the CPGB by 1924 is disingenuous.
However Macmillan wrote a letter of support for Oswald Mosley and an attack on the Baldwin government because it would not implement a programme of public works to tackle unemployment.