Prince Harry and Andrew's royal duties have been discussed in Parliament for the first time.
Peers in the House of Lords have been asking whether the royal pair should remain as ‘Counsellors of State’.
This role means they can act as stand-ins for the King - but they are both no longer working royals.
It is the first time the roles of the Duke of Sussex and the Duke of York as counsellors has been raised in Parliament, constitutional experts believe.
Their roles have been scrutinised since Harry and Meghan Markle moved their lives to California and Andrew became consumed by a sexual assault lawsuit, which he disputed before later settling, the MailOnline reports.
Labour peer Viscount Stansgate raised the issue of Harry and Andrew's role going forwards in the House of Lords, and asked if the Government planned to amend the Regency Act.
He questioned whether ministers should discuss "a sensible amendment" with King Charles III.
"Otherwise, are the Government happy to continue with a situation where the counsels of state and regency powers may be exercised by the Duke of York or the Duke of Sussex, one of whom has left public life and the other of whom has left the country?" he added.
Counsellors of State are authorised to carry out most of the King’s official duties, including attending privy council meetings, signing routine documents and receiving the credentials of new ambassadors to the UK.
However, some of the core constitutional functions, such as dissolving Parliament, appointing a prime minister and creating peers, can only be delegated on the express instruction of the monarch.
The King is understood to want the law amended so his counsellors are all working royals - but this would need a change in legislation.
That's because the 1937 Regency Act states that only the sovereign’s spouse and the next four in line to the throne - who are over the age of 21 - can act as Counsellors of State.
The current counsellors include the Queen Consort, Prince William, Prince Harry, the Duke of York and his eldest daughter Beatrice.
However, none out of the last three are a working royal.
The Queen’s other children - Princess Anne and Prince Edward - are not included because they are 16th and 13th in line to the throne respectively.
But royal experts have called for them to replace Andrew and Harry as they are still senior working royals.
The Lord Privy Seal, replying to Viscount Stansgate on behalf of the Government, said he could not discuss any private conversations held between ministers and the King or the Royal Household, while any changes to the Regency Act would be carried out "in close consultation with the Royal Household".
However, it was acknowledged that since King Charles is the new monarch, this is a "useful opportunity" for it to be reviewed.
"The Government will always consider what arrangements are needed to ensure resilience in our constitutional arrangements, and in the past we have seen that the point of accession has proved a useful opportunity to consider the arrangements in place," he told the Lords.
Meanwhile, King Charles met the UK's new prime minister, Rishi Sunak, in Buckingham Palace today as the monarch invited the Tory leader to form a new government.
He is the second PM of Charles' reign already with Liz Truss having officially resigned earlier this morning, becoming the country's shortest-serving premier.
