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
Margaret Thatcher her office in the Lords had been closed. Earlier that month, Thatcher was named the most competent Prime Minister of the past 30 years in an Ipsos MORI poll. Baroness Thatcher died on 8 April 2013, at the age of 87, after suffering a stroke. She had been staying at a suite in the Ritz Hotel in London since December 2012 after having difficulty with stairs at her Chester Square home in Belgravia. Her death certificate listed the primary causes of death as a "cerebrovascular accident" and "repeated transient ischaemic attack"; secondary causes were listed as a "carcinoma of the