No UK PM has completed a full term since Brexit referendum

Keir Starmer is the sixth UK PM to resign and fifth not to have completed a full parliamentary term since the Brexit referendum in 2016. David Cameron, who resigned a day after the referendum, was the last to serve a full term under the Fixed-Term Parliaments Act. Cameron was followed by Theresa May, Boris Johnson, Liz Truss and Rishi Sunak.