Before retirement, Montgomery's outspoken views on some subjects, such as race, were often officially suppressed. After retirement these outspoken views became public and his reputation suffered. He supported apartheid and Chinese communism under Mao Zedong, and spoke against the legalisation of homosexuality in the United Kingdom, arguing that the "Sexual Offences Act 1967" was a "charter for buggery" and that "this sort of thing may be tolerated by the French, but we're British — thank God." However, several of Montgomery's biographers, including Chalfont (who found something "disturbingly equivocal" in "his relations with boys and young men" ) and Nigel Hamilton (2002) have suggested that he may himself have been a repressed homosexual; in the late 1940s he conducted an affectionate friendship with a 12-year-old Swiss boy.