Political context behind the leadership change
Burnham previously served in several Labour governments before leaving Westminster in 2017 to become mayor of Greater Manchester. He became one of Britain’s best-known regional politicians during the COVID-19 pandemic, earning the nickname “King of the North” for his outspoken defence of northern England and his campaigns for greater regional investment.
Starmer announced on June 22 that he would step down as Labour leader after less than two years in office. His premiership faced mounting pressure amid political controversies, including his decision to appoint Peter Mandelson as Britain’s ambassador to the United States despite Mandelson’s close ties to the late sex offender Jeffrey Epstein.
Pressure intensified after Labour suffered heavy losses in local elections in May. After Burnham returned to Parliament by winning a by-election, many Labour MPs rallied behind him as Starmer’s successor.
In Britain’s parliamentary system, a change of leader inside the governing party can bring a new prime minister without a general election. The monarch appoints as prime minister the person most likely to command a majority in the House of Commons, which normally means the leader of the largest governing party.
The formal handover is expected on Monday, 20 July 2026, following the standard Downing Street and Palace sequence: the outgoing prime minister resigns to King Charles III, who then invites the incoming Labour leader to form a government.