British Prime Minister Keir Starmer announced his resignation as UK prime minister and Labour Party leader on June 22, 2026, setting the stage for a new leader to take office before Parliament returns in September.
Speaking from outside 10 Downing Street, Starmer said he would remain in post until the Labour Party completes its leadership contest. He informed King Charles III of his decision earlier that morning, according to the BBC and Sky News.
Andy Burnham, the former Mayor of Greater Manchester, is the frontrunner to replace Starmer. Burnham won a special election in Makerfield last week, a resounding victory that intensified pressure on Starmer to step down. According to Reuters and CNBC, Burnham is a favourite to become the next Labour leader, and sources told The Times that he is seeking a “coronation” to become Britain’s next prime minister by September.
Starmer’s resignation comes after mounting pressure from within his own Labour Party. Multiple cabinet ministers and Labour MPs had called for him to set a timetable for his departure, citing public dissatisfaction with his government. The Guardian reported that a new leader is expected to be in place before Parliament returns in September, though it remains unclear whether there will be a contested leadership race or an uncontested handover of power to Burnham.
Starmer’s departure marks an extraordinary period of political instability in the UK. According to the San Francisco Chronicle and other outlets, his successor will be Britain’s seventh prime minister in just over a decade. The Hill noted that Starmer is Labour’s seventh prime minister since the party first gained power in 1924, but none has ever been unseated against their will until now.
Sources
- BBC — Starmer’s resignation announcement and his decision to remain as caretaker PM
- Sky News — Resignation statement and timeline details
- The Guardian — New leader expected before Parliament returns in September
- Reuters — Burnham’s special election victory and seventh prime minister context
- CNBC — Burnham as frontrunner and leadership timeline
- The Times — Burnham seeking “coronation” by September
- San Francisco Chronicle — Seventh prime minister in a decade milestone
- The Hill — Labour prime minister history
