Premiership of Margaret Thatcher Premiership of Margaret Thatcher Margaret Thatcher served as Prime Minister of the United Kingdom from May 1979 to November 1990. She became Prime Minister after serving as Leader of the Conservative Party since 1975. In domestic affairs, Thatcher is best known for her sweeping policies concerning the affairs of the economy, including the privatisation of most nationalised industries. In foreign policy, she fought a war against Argentina and played a key role with President Ronald Reagan and Soviet leader Mikhail Gorbachev in ending the Cold War. By the late 1980s, she was alienating many senior members of her Cabinet by
Death and funeral of Margaret Thatcher British prime ministers who drew on a scholarship that demanded markets without regulation" and that "her key role in signing the Anglo-Irish Agreement will be recalled as a valuable early contribution to the search for peace and political stability". Sinn Féin leader Gerry Adams castigated Thatcher for "the great hurt done to the Irish and British people during her time as British prime minister", adding: "Here in Ireland, her espousal of old draconian militaristic policies prolonged the war and caused great suffering". Australian Prime Minister Julia Gillard expressed admiration for Thatcher's achievements as a woman. New Zealand Prime Minister John