UK Prime Minister Keir Starmer resigned on Monday, paving the way for Britain to have its seventh prime minister in just over a decade. He said he was stepping down as leader of the governing Labour Party but would remain caretaker prime minister until a new head is chosen by the party.Andy Burnham, who won a special parliamentary election last week, confirmed that he will run to succeed Starmer.Starmer won a landslide victory in the 2024 general election, but a series of missteps badly damaged his credibility. His resignation comes the day before Britain marks the 10th anniversary of its vote to leave the European Union, a decision that still roils the country's economy and politics.Andy Burnham has been sworn in as a lawmaker in Parliament. Loud cheers broke out in the House of Commons as Burnham returned to Parliament after nearly a decade as mayor of Greater Manchester.Andy Burnham will run to succeed Keir Starmer as British prime ministerHis victory gave hope to Labour lawmakers that Burnham could transform the fortunes of a party that has lost support under Starmer. The pound rose against other currencies and British government bonds rallied, as investors welcomed a more certain path to Burnham's premiership.FARAGE CALLS FOR ELECTIONDespite hoping for a smooth handover, the change is not without risk.Burnham has yet to flesh out a full policy agenda and Reform's Farage immediately called for a national election. "I've had enough of waiting around. Britain needs change - real change, not another washed-up has-been shoved into place by the uniparty," Farage said in a statement.Keir Starmer went from election landslide to downfall after his supporters deserted himEuropean Commission president looks forward to stable relations with the UKEuropean Commission President Ursula von der Leyen said Starmer "did a true reset built on trust, without any question."Speaking on the eve of Brexit's 10th anniversary of Britain's departure from the EU, von der Leyen said: "I'm looking forward to resuming a strong and stable relationship with the people of the United Kingdom."