Advisory Committee on Antarctic Names | International Olympic Committee | Committee of Public Safety | UK Antarctic Place-Names Committee | Republican National Committee | Central Committee | Democratic National Committee | Harold Macmillan | House Un-American Activities Committee | International Committee of the Red Cross | United States Senate Committee on the Judiciary | United States House Committee on Ways and Means | Macmillan Publishers | United States Olympic Committee | American Jewish Committee | United States House Committee on the Judiciary | Palgrave Macmillan | United States Senate Committee on Appropriations | Judicial Committee of the Privy Council | International Paralympic Committee | Central Committee of the Communist Party of the Soviet Union | United States House Committee on Appropriations | Macmillan | Italian National Olympic Committee | Committee to Protect Journalists | International Rescue Committee | United States Senate Committee on Foreign Relations | United States House Committee on Oversight and Government Reform | United States House Committee on Foreign Affairs | United States House Committee on Energy and Commerce |
He held a number of chairmanships, including the Committee on Finance and Industry in 1929-31, the Canadian Royal Commission on Banking and Currency in 1933, the Pilgrim Trust from 1935–52, the Political Honours Committee from 1935–52, the court of the University of London from 1929–43, and the BBC Advisory Council from 1936-46.