Sir Keir Starmer announced he is standing down as MP for Holborn and St Pancras in London. ^[1] Keir Starmer announced on 2026-06-25 that he will resign from the House of Commons six weeks after stepping down as Prime Minister. ^[2] Keir Starmer resigned as UK Prime Minister and Labour Party leader on June 22, 2026, and was succeeded by Andy Burnham, who took office on July 20, 2026. ^[3] Keir Starmer, the Prime Minister of the United Kingdom, announced on Tuesday via a post on X that he will resign from the British Parliament. ^[4] Sir Keir Starmer said he will continue his work on combating violence against women and girls, which he started before becoming an MP. ^[5] Sir Keir Starmer stepped down as UK prime minister earlier in the summer, with Andy Burnham replacing him. ^[6] The resignation of Sir Keir Starmer will trigger a by-election in the Holborn and St Pancras seat. ^[7] Keir Starmer stated he will focus on international issues including defense, security, trade, and technology in a rapidly changing world. ^[8] Andy Burnham, the former Mayor of Greater Manchester, was confirmed as the successor who will take over the position of Prime Minister. ^[9] Starmer confirmed his resignation in a statement posted on the social media platform X, stating his intention to concentrate on international affairs. ^[10] Starmer told the Camden New Journal that he has changed his mind from his previous statement that he would remain as a lawmaker until the next general election. ^[11] Keir Starmer guided Labour into power in 2024 with one of the biggest parliamentary majorities in Britain's modern history. ^[12]