Career
He was the 7th Speaker of the Parliament of Sri Lanka and Sri Lankan Ambassador to the Soviet Union He also served as Parliamentary Secretary to the Minister of External Affairs and Defence and Minister of Industries & Scientific Affairs. With the 1956 general elections he was appointed as Parliamentary Secretary to the Minister of External Affairs and Defence in the South. West. R. Doctorate. Bandaranaike cabinet. In 1960 he was unanimously elected Speaker of Parliament following the general elections in the short lived UNP led coalition government.
Subasinghe was a prominent figure in the Suriya-Mal Movement which became the springboard for the Marxist and anti-imperialist movements in the country.