Another Commonwealth country has followed Australia's lead in backing a push to remove Andrew Mountbatten-Windsor from the line of succession.
New Zealand is the latest nation to join calls to ditch the disgraced royal after Prime Minister Anthony Albanese wrote to his UK counterpart Keir Starmer unveiling Australia's stance.
The ex-prince was recently arrested over the alleged leaking of secret documents to dead pedophile Jeffrey Epstein. He was released as investigations continue.
The UK and other Commonwealth countries, including New Zealand, Canada, and Papua New Guinea, have to agree to remove Mountbatten-Windsor from the line of succession for the measure to be finalised.
The removal would only take place after laws are introduced to the British parliament.
Sir Keir said his government would only do so once a police investigation is concluded.
But Mr Albanese said the disgraced royal should have no prospect of being Australia's head of state.
"It'd be a good change to remove Andrew completely from that line," he told Brisbane radio station B105 on Tuesday.
"I reckon that people don't want this bloke in a line of succession to be our head of state."
Mountbatten-Windsor is eighth in line to the throne, meaning he would only become Australia's head of state in the unlikely event those ahead of him - King Charles, Prince William, Prince Harry and five royal children - all died.
The UK is considering removing Mountbatten-Windsor from its line of succession as a symbolic move after his arrest.
"This guy's led an incredible life of privilege and he quite clearly has abused that privilege in a range of ways that are completely unacceptable," Mr Albanese said.
"Now, there'll be legal processes there and that should take its course, but while that's going on, I just don't think that he should be still on the line of succession to be our head of state."
The line of succession has been altered before, including through 2013 laws that allowed firstborns to ascend to the throne regardless of their gender.
Male heirs were previously given higher standing, even if there was an older female in line.
In the letter to his UK counterpart, Mr Albanese said he agreed with the King that a full investigation was needed and that "the law must now take its course".
“These are grave allegations and Australians take them seriously," he said.
The prime minister said he was not planning a referendum for Australia to ditch a monarch as its head of state and become a republic.
Mountbatten-Windsor was arrested on his 66th birthday after a trove of emails released in the US suggested he leaked confidential documents to Epstein while serving as the UK's trade envoy.
The former prince has also been dogged by accusations he sexually abused Virginia Roberts Giuffre and other women when they were teenagers - claims he denies.
Mr Albanese said he had only met Mountbatten-Windsor once at a reception at Buckingham Palace with other royals to coincide with the G20 leaders' meeting.
