Premiership of Margaret Thatcher that Thatcher proceed cautiously in working with black communities because she believed they gave cannabis to babies. 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
Historical rankings of Prime Ministers of the United Kingdom prime ministers were ranked in the top 100. Winston Churchill was voted greatest Briton, the Duke of Wellington was in 15th place (though not featured in contemporary polls as he was a 19th-century politician), Margaret Thatcher was in 16th place, Tony Blair was 67th and David Lloyd George was 79th. The BBC television programme "The Daily Politics" asked viewers in 2007 to select their favourite Prime Minister. Margaret Thatcher topped the list with 49% of the vote, with Clement Attlee coming second with 32%. Historical rankings of Prime Ministers of the United Kingdom "The Times" constructed a poll for the