PA REVIEW OF THE YEAR 2022 File photo dated 20/10/22 - File photo dated 31/08/2022 of Rishi Sunak and Liz Truss during a hustings event at Wembley Arena, London, as part of their campaign to be leader of the Conservative Party and the next prime minister. Liz Truss has announced she will resign as Prime Minister. Issue date: Tuesday December 20, 2022.