In September and October 2022, the Conservative Party government led by newly appointed prime minister Liz Truss faced a credibility crisis. It was caused by the September 2022 mini-budget and a disorganised vote in the House of Commons over a parliamentary vote to ban fracking, ultimately resulting in the loss of support of Conservative members of parliament (MPs).

Mary Elizabeth Truss is a British politician who served as Prime Minister of the United Kingdom and Leader of the Conservative Party from September to October 2022. On her fiftieth day in office, she stepped down amid a government crisis, making her the shortest-serving prime minister in British history. The member of Parliament (MP) for South West Norfolk since 2010, Truss previously held various Cabinet positions under three prime ministers—David Cameron, Theresa May and Boris Johnson—lastly as foreign secretary from 2021 to 2022.