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
Deputy Prime Minister of Sweden named "Vice statsminister" ("Vice Prime Minister") when the cabinet took office in October 2014, was in fact not expected to temporarily assume the duties of the Prime Minister as "Statsministerns ställföreträdare" ("Deputy of the Prime Minister") as stated in the Instrument of Government, instead yielding to the most senior minister of the cabinet. Effectively this makes social democratic Foreign Minister Margot Wallström the actual deputy of the Prime Minister, due to seniority rather than appointment. It also rendered the title of "Vice statsminister" an honorary title, for the most senior member of the party functioning as junior partner in the