Burnham becomes UK’s 7th PM in 10 years Andy Burnham becomes Britain’s seventh prime minister in a decade after an unprecedented period of political upheaval David Cameron 2010-2016 Resigns after losing Brexit referendum Theresa May 2016-2019 Resigns after failing to win parliamentary backing for Brexit deal Boris Johnson 2019-2022 Resigns after “Partygate” and other scandals Liz Truss Sep-Oct 2022 Resigns after “mini-budget” plunges financial markets into chaos Rishi Sunak 2022-2024 Resigns after leading Conservatives to historic election defeat Keir Starmer 2024-2026 Resigns after losing party support following poor polls and setbacks 2010 2012 2014 2016 2018 2020 2022 2024 2026 David Cameron: 6 years, 64 days Boris Johnson: 3 years, 45 days Theresa May: 3 years, 12 days Liz Truss: 50 days Rishi Sunak: 1 year, 255 days Keir Starmer: 2 years, 15 days Conservative party Labour party 1 2 3 4 5 6 1 2 3 4 5 6 Andy Burnham Sources: BBC, Reuters Pictures: Getty Images, Newscom © GRAPHIC NEWS