Sir Julian Huxley, grandson of ‘Darwin’s bulldog’ T. H. Huxley, was one of the most prominent scientists and ‘public intellectuals’ of the twentieth century. He held academic positions in Britain and the USA, after which he served as the Secretary of the Zoological Society, London, and as the first Director-General of UNESCO. Huxley campaigned for issues including birth control, population restriction, conservation, scientific humanism, and eugenics. In this paper I will analyse Huxley’s involvement with the propaganda film ‘Heredity in Man’, a work which was produced by the Eugenics Education Society in the 1930s. I will outline the production of this film, the debates that shaped its contents, and compare the work to the broader reputation of Huxley as a populariser of science. I will place this within the context of eugenics education and propaganda work in the UK, and the historiography concerning reform and mainline eugenics.