Rishi Sunak plunged the knife in on Liz Truss today pledging to 'fix' her 'mistakes' after taking over as Britain's 57th PM today. The incoming premier addressed the nation in Downing Street after being asked to form a government by King Charles in the traditional 'kissing hands' ceremony. He warned there will be 'difficult' decisions to deal with the 'profound economic crisis' facing the country, saying he 'understood' the way Britons were suffering. 'I fully understand how hard things are,' he added. In a swipe at Boris Johnson, he said the 'mandate' from the 2019 election did not belong to any individual. 'I stand here before you ready to lead our country into the future. Ready to put your needs before politics,' he said. Earlier, Liz Truss hailed her 'significant achievements' as she gave her farewell speech outside No10 - sealing her fate as the shortest-serving PM ever.