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
Governor-General of Ceylon absence of the governor-general, the Chief Justice of Ceylon became acting Governor-General. There were four governors-general. Sir Henry Monck-Mason Moore became the last Governor of Ceylon and first governor-general when the "Ceylon Order in Council", the first constitution of independent Ceylon came into effect. He was followed by Lord Soulbury, thereafter by Sir Oliver Goonetilleke the first Ceylonese to be appointed to the post. When William Gopallawa was appointed as Governor-General in 1962, he discarded the ceremonial uniform of office. When Ceylon became a republic in 1972 the post was replaced by the office of President of Sri Lanka. The