Andy Burnham is set to become the next Labour leader after surpassing the 323 nominations required, a milestone achieved following an endorsement from backbencher Mike Reader. This development mathematically confirms his position, as no other challenger can now enter the contest, needing 81 nominations from the 403 Labour MPs.

Burnham's path to leadership was largely assured due to Keir Starmer's stated intention not to support any challenger. He is scheduled to officially become party leader on Friday and will take over from Starmer on Monday. However, questions persist regarding his specific plans for his new role.

Reports indicate Burnham is planning an "Autumn mega-Budget," intended to combine a significant fiscal package with a comprehensive spending review. Concerns are surfacing about potential tax increases targeting the wealthy South, with proposals reportedly including a land tax, a revaluation of council tax, and an enhanced mansion tax. These measures are suggested as funding mechanisms for increased council housing and greater public control over utilities.

While Burnham has committed to adhering to the Labour manifesto and enhancing devolution, detailed tax and spending plans remain unspecified. The upcoming leadership transition has also seen internal jockeying for positions, with Ed Miliband reportedly being considered for chancellor and David Miliband for Foreign Secretary. James Purnell is also tipped for the role of No. 10 chief of staff.

Burnham is expected to be formally declared Labour leader at a special conference on July 17, with a potential transition to prime minister on July 20. The nomination process means MPs cannot change their endorsements unless a candidate withdraws. Al Carns, a former armed forces minister, was among the last potential contenders to withdraw from the race last week, citing the country's need for stability.

Meanwhile, outgoing leader Keir Starmer is set to attend a 'Coalition of the Willing' meeting in Paris and Bastille Day events during his final week in office.