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
Denis Thatcher a Commonwealth Heads of Government Meeting, asking "So, what do you think the fuzzy wuzzies are up to?" In December 1990, following the resignation of his wife as Prime Minister, it was announced that Denis Thatcher would be created a baronet (the first such creation since 1964). The award was gazetted in February 1991, giving his title as Sir Denis Thatcher, 1st Baronet, of Scotney in the County of Kent. Thus Margaret was entitled to style herself Lady Thatcher while retaining her seat in the House of Commons; however she made it known that she preferred to be addressed as