Andy Burnham officially assumed office as the United Kingdom's Prime Minister on Monday, July 20th, 2026, following a weeks-long process to replace the incumbent Sir Keir Starmer as leader of the Labour Party. Burnham's meeting with King Charles III took place in the Chinese Dining Room shortly after Sir Keir tendered his resignation.

Speaking outside his new official residence at 10 Downing Street shortly before 1pm local time, Burnham pledged to provide immediate cost-of-living relief for British citizens and promised to "do politics differently." He acknowledged being the country's seventh prime minister in 10 years and stated, "We will make this moment a circuit breaker for Britain."

In his clearest indication yet on foreign policy, Burnham affirmed that Britain would honour its "defence commitments to international partners," signaling no plans to alter the AUKUS defence partnership, in which Australia has invested billions of dollars.

Burnham also announced plans to introduce a new 10-year plan for Britain later this year, with some immediate cost-of-living relief measures to be tabled on Tuesday.

Earlier on Monday, Sir Keir Starmer gave his final address outside Number 10 Downing Street, stating, "My work here is done," and expressed pride in his achievements.

Burnham's first speech as Prime Minister marked a significant break with British tradition as he spoke without a lectern and was surrounded by supporters on Downing Street.

Notable Quotes

  • "We will make this moment a circuit breaker for Britain," Burnham said.
  • "Later this year, I will bring forward a new plan for Britain, a 10-year plan."
  • "Britain would honour its defence commitments to international partners."
  • Sir Keir Starmer: "My work here is done."

Sources

ABC Australia News: Andy Burnham becomes British PM, provides AUKUS hints in first speech