Liz Truss served as Prime Minister of the United Kingdom from September 6, 2022, to October 25, 2022. Her tenure lasted 49 days, making her the shortest- serving UK prime minister in history. Truss became Prime Minister after winning the Conservative Party leadership election on September 5, 2022, succeeding Boris Johnson. Her time in office involved managing a cost-of- living and energy crisis, but her economic policies including a controversial mini-budget led to financial instability. Facing mounting criticism and loss of confidence, she announced her resignation on October 20, 2022, and officially left office on October 25, 2022, when Rishi Sunak succeeded her.