Britain's new prime minister, Andy Burnham, vows to end years of instability

Andy Burnham became Britain's seventh prime minister in a decade on Monday, pledging to ​reshape its politics to deliver a new economic model and revive a nation "fed up" with a revolving door of leaders.

In front of dozens of supporters outside ‌his new office and residence at 10 Downing Street, Burnham said politicians had failed to bring the stability needed to raise living standards, something he said he would change, with both immediate measures and a longer-term plan to be drawn up later this year.

Speaking without notes, Burnham delivered a domestic-focused speech aimed at offering hope to a nation that has, like many European countries, struggled for years with soaring prices and anaemic economic growth. He ​did not touch on foreign affairs.

"I know people at home are fed up with politics. I hear you, and I want to be honest with you, we have not ​been good enough, and we need to be better," he said, dispensing with the lectern that prime ministers generally use.

Burnham pledged to use his ⁠premiership as a "circuit-breaker for Britain", arguing that a new model was needed to rebuild the country, which has been in political turmoil since voting in 2016 to leave the European Union.

Burnham promises 10-year plan, but not for several months

Just over an hour after his predecessor and Labour colleague Keir Starmer had made his farewell speech to say, "My work is done", the 56-year-old former Greater Manchester mayor ​entered Downing Street, where he said his team would tackle his priority: to end rough sleeping.

The major challenges will then lie ahead.

Burnham must first unveil his cabinet — already the subject of much debate in the Labour Party — and then tackle a long list of problems ranging from high levels of illegal immigration to underperforming utility firms.

Starmer, ousted by his own lawmakers a month ago, said his work as prime minister was "the privilege of my ​life" and that he wished Burnham every success, with "my full support".

Burnham did not refer to Starmer in his speech, instead focusing on how he will bring change. But he acknowledged that ​some of his programmes would take time.