Parliamentary Private Secretary to the Prime Minister Bonar Law's Parliamentary Private Secretary, J.C.C. Davidson acted in effect as his Chief of Staff. Margaret Thatcher's downfall from the Conservative Party leadership in 1990 is attributed by many to the actions of her Parliamentary Private Secretary, Peter Morrison, in failing accurately to count votes amongst Conservative backbenchers. Some Parliamentary Private Secretaries to the Prime Minister go on to hold higher office; Lord Dunglass served as Parliamentary Private Secretary under Neville Chamberlain and later went on to serve as Prime Minister in his own right. There can be multiple Parliamentary Private Secretaries to the Prime Minister at a given time.
Prime Minister of the Philippines now both head of government and head of state. The office of the President of the Council of Government was created by Constitution of the Philippines on Title IX, with the role as the head of secretaries to the President of the Republic. The first President of the Council was Apolinario Mabini, who also happened to be the concurrent Minister of Foreign Affairs. The President of the Council is equivalent to present-day Prime Minister, having the management of the day-to-day operations of the government. The Constitution provided clear powers and duties of the Prime Minister starting at the administration of