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 the United Kingdom his effective deputy. After the 2016 referendum on European Union membership, and David Cameron's subsequent resignation, his successor as Prime Minister, Theresa May, also chose not to appoint an individual to either position. Following the 2017 snap general election, May again did not appoint a Deputy Prime Minister but did appoint Damian Green as First Secretary of State. The Deputy Prime Minister's Office (DPMO) is a non-statutory office, only being formed when a deputy prime minister is appointed which consists of the staff members and advisers who assist the deputy prime minister in his or her role. The most recent