Liz Truss announced her resignation on October 20 after just 44 days in office - making her Britain's shortest-serving prime minister ever.
The Tory leader announced that she would be leaving the role after weeks of turmoil in Downing Street and furious backbench MPs expressing no confidence.
Truss took over from Boris Johnson on September 5 after beating former Chancellor Rishi Sunak and current Leader of the House of Commons Penny Mordaunt in the leadership contest, which took place over the summer.