 In his first speech after moving into 10 Downing Street with his family, Prime Minister Keir Starmer pledged... We will rebuild Britain. He vowed to lead a government of service on a mission of national renewal and to win back people's trust after Brexit, which polls show most Britons now regret, and Boris Johnson, who threw illegal COVID lockdown parties and the brief economic rollercoaster of his successor, Liz Truss.