Andy Burnham as new UK PM faces the defining test for the centre-left. Australia will be watching closely

‘For British Labour, Burnham is their great hope for revival. But the new PM faces many of the same challenges that confronted his predecessor.’ Photograph: Carl Court/Getty Images

The British love a coronation. That’s how the arrival of Andy Burnham into 10 Downing Street is being described in the UK. On Friday, Burnham was “crowned” as Labour leader, after being the only party MP to secure enough nominations following Keir Starmer’s resignation. He is now confirmed as Britain’s prime minister.

Australians probably would call this something else: a leadership coup. For months, Burnham stalked Starmer to claim the Labour leadership. It was a meticulous campaign from the politician dubbed the “King of the North”. Via a byelection in the seat of Makerfield, Burnham has transplanted himself from the offices of the mayor of greater Manchester into the House of Commons and now Downing Street.