14th November 1990: Margaret Thatcher’s fifteen year leadership of the British Conservative Party challenged by Michael Heseltine

Thatcher became Prime Minister of the United Kingdom following the General Election of 1979 but by the late 1980s her popularity, along with that of her party, was plummeting.

14th November 1990: Margaret Thatcher faces leadership challenge

On the 14th November 1990, Margaret Thatcher’s fifteen year leadership of the British Conservative Party was challenged by Michael Heseltine, a former cabinet minister.