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's Security Division Prime Minister's Security Division Prime Minister's Security Division (PMSD) is a unit of the Sri Lanka Police charged with the close protection of the Prime Minister of Sri Lanka. It is headed by a gazetted officer of the rank of Deputy Inspector General of Police (DIG). The unit consists of both uniformed and non-uniformed officers who provide close protection and guard Prime Ministerial residences. Police officers from the "Ceylon Police Force" were assigned to protect the Prime Minister of Ceylon since the post was established in 1947. These policemen were randomly chosen of the Prime Ministers security detail and to