Andy Burnham, the former mayor of Greater Manchester, was sworn in as the new Member of Parliament for Makerfield on Monday and formally launched his bid to lead the Labour Party — and with it, the British government — hours after Prime Minister Keir Starmer announced his resignation outside Downing Street. With his principal rival, former Health Secretary Wes Streeting, declaring his support for Burnham rather than entering the race himself, the 56-year-old appears on course to become the United Kingdom's seventh prime minister in a decade.

Starmer, who came to office in 2024 following a landslide Labour victory but never fully recovered from a string of missteps and mounting public frustration, delivered an emotional farewell speech before staff and supporters at Downing Street. He will remain as caretaker prime minister until a successor is confirmed. Nominations open on 9 July, with a new leader expected to be in place when Parliament returns in September — or sooner if, as now seems likely, no serious challenger emerges. Each candidate requires the backing of 20% of Labour lawmakers to stand, a threshold that could leave Burnham effectively uncontested. If he wins, he would resign as mayor of Greater Manchester, a post he has held since 2017, triggering a by-election for that role.

Burnham brings a distinctive political identity to Westminster. His tenure in Manchester — built around integrated public transport, place-based economic policy and a philosophy critics call