 He took up the post of professor of history at King's College London in 1962, where he remained until becoming director of the Institute of Historical Research (IHR) and professor of history in the University of London, 1967–77.Dickens was also active in other bodies, including being president of the Ecclesiastical History Society, 1966–68; a member of the Advisory Council on Public Records, 1968–76; an advisor to the Council on the Export of Works of Art, 1968–76; secretary, chairman and general secretary of the British National Committee of Historical Sciences, 1967–79; foreign secretary of the British Academy, 1969–79; and vice-president of the British Record Society, 1978–80.Dickens enjoyed "a deep love affair with Germany", was a moving force in the establishment of the German Historical Institute in London and was decorated by the German government.