three Prime Ministers (Pitt the Elder) as Chatham House. Macadam oversaw the growth of the Institute from William Pitt's former Cabinet Room where as Prime Minister Pitt had presided over his Cabinet overlooking St. James's Square located above the entrance hall. To enable the Institute to increase the breadth and range of its activities, Macadam steadily expanded office and meeting space for the Institute by acquiring the freehold properties adjoining 10, St James Square (Chatham House). Macadam was responsible for numerous international conferences around the world. He organised the first Commonwealth Relations Conference at Hart House, University of Toronto, Canada in 1933 (the first Commonwealth conference per se), followed by others at Lapstone near Sydney, Australia in 1938, at Chatham House, London in 1945, at Lucknow, India in 1950., and at Lahore, Pakistan in 1954 Also various Institute of Pacific Relations Conferences, including that at Banff, Canada 1933. He was a participant in the Congress of Europe at The Hague, Netherlands in 1948. He travelled to the British Dominions and helped the independent establishment of the various Commonwealth Institutes of International Affairs or where such bodies had earlier been established in both Australia and Canada to generate financial support from benefactors in order that they could have their own full-time secretariats. The Canadian Institute of International Affairs funding 1932 (now known as the Canadian International Council); the Australian funding 1934. The formation of the Institutes in New Zealand 1934; in South Africa 1934; in Indian 1936; in Pakistan 1947. At Chatham House he is remembered for his Scottish drive and application ... He organised persons, events and work with equal stern objectivity. The Times, 24 December 1974 He was the institute’s chief executive for a period of 25 years during which it grew from a promising pioneering experiment into a well established and internationally respected centre for the study and discussion of world affairs. When asked who founded Chatham House, Ivison would reply with a list of distinguished people, among whom Lionel Curtis took pride of place, and would emphasise the great amount of time that they devoted in shaping the institute’s policy in the early days. This no doubt was true, but it was Ivison who had to carry their ideas into practice, raise the money and recruit the staff. He was a gifted promoter of Chatham House and its objectives, obtaining endowments in Britain and the Commonwealth and