When the Conservative Party changes leader, it often goes for a radical switch. As Margaret Thatcher’s "iron lady” sheen faded, the Tories turned to John Major, dubbed the "gray man” for his uninspiring leadership style. After self-proclaimed "quiet man” Iain Duncan Smith, slick PR professional David Cameron got the nod.

In 2019 straight-laced vicar’s daughter Theresa May — mocked for admitting that in her youth she sinned by running through a farmer’s wheat field — was succeeded by the chaotic but charming Boris Johnson.

Conservative MPs are now likely to have a range of options: Defense Secretary Ben Wallace is seen as steadfast; former Health Secretary Sajid Javid talks up his principles. Ex-Chancellor of the Exchequer Rishi Sunak was the first big-hitter to join the race, launching his bid on Friday.