Prime Minister Anthony Albanese says he will pledge allegiance to King Charles III during the monarch's coronation at Westminster Abbey on Saturday.
Mr Albanese flew into London on Tuesday morning local time and met with High Commissioner to the United Kingdom Stephen Smith, before meeting King Charles for an audience at Buckingham Palace.
Later, during an interview with British broadcaster Piers Morgan, he was asked about declaring allegiance to the new sovereign.
The prime minister — a republican — said he would take the oath as Australia had made a decision not to become a republic in the 1999 referendum.
"I will do what's entirely appropriate as the representative of Australia," Mr Albanese said.
"… Australians made a choice in 1999, and one of the things that you've got to do is to accept democratic outcomes.
"We made that choice, and I will certainly engage in that spirit."
This coronation will be the first in history in which the greater public will be invited to pledge allegiance to King Charles in an element of the ceremony dubbed the "homage of the people".
Mr Albanese will be present at the King's coronation on Saturday, as part of an Australian contingent including Governor-General David Hurley, the state governors, Julie Bishop and Matildas forward Sam Kerr, as Australia's flag-bearer.
Musician Nick Cave, comedian Adam Hills, nurse Emily Regan, Indigenous art curator Jasmine Coe, youth advocate Yasmin Poole and 2022 Young Australian of the Year Dr Daniel Nour will also be in attendance.
Details of what was discussed during Mr Albanese's meeting with the King have not been released.
It was the second time Mr Albanese has met King Charles — the pair met at Buckingham Palace in September last year after the death of Queen Elizabeth II.
It is a very quick turnaround for the Prime Minister, who marched with trade unions on the streets of Brisbane the previous day to mark Labour Day.
While in the UK, Mr Albanese will visit the AUKUS submarine facility in the northern port town of Barrow-in-Furness and have a meeting with UK Prime Minister Rishi Sunak to discuss the free-trade agreement between the two countries.
