Sir Patrick was Vice Chairman of the British Section of the Inter Parliamentary Union (1974 - 1984) and Chairman of the British Bahrain, British Maltese, British South Africa and British Taiwan Groups. He represented Britain at the 17th General Assembly of the United Nations in 1962. The introduction of the General Law Amendment Act, the Rivonia Trials and the United Nations conference on sanctions are some of the more significant topics on which files were accumulated in the early 1960s [DPW/48/484; 487; 486 & 488].