7h 32min, nov 13, 1990 y - 13 November 1990: Geoffrey Howe resigns
The deputy prime minister's strained relations with Thatcher over the Poll Tax and her approach to Europe reach a boiling point in a very public resignation in the House of Commons. He calls for others to follow. The fight for the Conservative party is on, and Michael Heseltine puts his name in the hat.
Added to timeline: