Prime Minister's Office (Sri Lanka) the Parliament. The office of prime minister was formed in 1947 with D. S. Senanayake becoming the first Prime Minister of Ceylon. It consisted of a Secretary (Permanent Secretary) and an Assistant Secretary, who were officers of the Ceylon Civil Service, and a Private Secretary, along with clerical and support staff based at the Senate Building along with the Senate, Cabinet office and the Ministry of External Affairs and Defence. Since 1960 the prime minister's office has been based at Sirimathipaya Mansion on Sir Ernest de Silva Mawatha (formerly Flower Road), Colombo which was the former residence of philanthropist Sir
Prime Minister of Zimbabwe and held by Morgan Tsvangirai until the position was again abolished by the 2013 Constitution of Zimbabwe. Zimbabwe's prime ministerial office owes its origins to the country's predecessor states. The position began with George Mitchell who became Prime Minister of Southern Rhodesia in 1933. All subsequent predecessor-states continued with the post until Abel Muzorewa who became Prime Minister of Zimbabwe Rhodesia in 1979 under the Internal Settlement. The Lancaster House Agreement brought an independence constitution which made provision for a parliamentary system, with a President as head of state and a Prime Minister as head of government. The presidency was