British prime minister Margaret Thatcher told journalists in Downing Street to "rejoice" upon hearing news of the successful recapture of South Georgia from Argentine forces in the Falklands War.

Margaret Thatcher became the first female prime minister of the United Kingdom.

Falklands War: British prime minister Margaret Thatcher announced that white flags were flying over Port Stanley, in advance of the formal surrender of Argentine forces.

British prime minister Margaret Thatcher (pictured) gave a landmark speech at the Belfry of Bruges, Belgium, against federalism in the European Economic Community.

The Provisional Irish Republican Army detonated a bomb at the Grand Hotel in Brighton, England, in a failed attempt to assassinate British prime minister Margaret Thatcher and her cabinet.

British prime minister Margaret Thatcher officially opened the M25, one of Britain's busiest motorways.

A group of Conservative members of Parliament wrote a letter outlining their opposition to the economic policy of Margaret Thatcher, leading to speculation over a split from the party.