Who was the first woman prime minister of Great Britain?

that would be Margaret Hilda Thatcher, Baroness Thatcher, Thatcher was the longest-serving British Prime Minister since William Gladstone, and had the longest continuous period in office since Lord Liverpool in the early nineteenth century. She is also the only woman to have served as Prime Minister, one of only two to lead a major political party in the UK or to hold any of the four great offices of state (the second being Margaret Beckett). greetings. : )

Thatcher or the great she elephant as she was known, was thrown out of office on the 22 nd of november 1990 thus bringing to an end Britains only flirtation with fascism. The 22nd of November is liberation day. There has been no other female leader of a political party in Britain and as a result of the damage thatcher did it is unlikely there will ever be another