Second Vatican Council | World Boxing Council | United States National Research Council | National Research Council | Privy Council of the United Kingdom | British Council | Council of Trent | Council of Europe | National Security Council | Legislative Council | Privy Council of England | Greater London Council | Council on Foreign Relations | Lord President of the Council | United States National Security Council | Legislative Council of Hong Kong | City Council | World Council of Churches | Council of Constance | United Nations Security Council | New York City Council | London County Council | Protein-protein interaction | Auckland Council | Her Majesty's Most Honourable Privy Council | United Nations Security Council resolution | Medical Research Council (UK) | Council of Chalcedon | Order in Council | Council of Ministers |
Caroline also served as Secretariat member of the InterAction Council, a group of former Heads of Government, chaired by Helmut Schmidt, that develops recommendations on political, economic, and social issues.