The UK Government has issued an update over Andrew Mountbatten-Windsor's Duke of York title.
The disgraced former prince continues to hold the peerage given to him when he married his ex-wife Sarah Ferguson.
But there have been calls for steps to be taken in Parliament to deprive him of the rank.
It follows a bombshell announcement on October 30 which saw King Charles officially strip his younger brother of his HRH style and prince title.
The move came amid growing controversy over Andrew's links to paedophile financier Jeffrey Epstein.
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Charles also confirmed the removal of Andrew from the Roll of the Peerage as the Duke of York.
But according to an expert Commons research briefing, his exclusion from the list only means he cannot be referred to by the title in official documents and does not scratch the peerage itself.
Ministers have already acknowledged that removing the honour would require an Act of Parliament.
The Government has been pressed at Westminster over if it would bring in legislation to give effect to Charles' decision to remove all titles from Andrew.
But it has said there is 'no need' to legislate to remove titles from Andrew despite him remaining by law the Duke of York.
Responding to a written question by Labour peer Viscount Stansgate - son of the late left-wing firebrand Tony Benn - Labour frontbencher Baroness Anderson of Stoke-on-Trent said: "Following the statement made by Buckingham Palace on October 30, the entitlement to the title of 'Prince' and the style of 'Royal Highness' has been removed by Letters Patent.
"The title of the Duke of York has been removed from the Roll of the Peerage and will no longer be used officially.
"There is therefore no need for legislation to implement the measures that have been announced."
The Duke of York title was handed to Andrew upon his marriage to Fergie in July 1986.
Andrew was stripped of his royal titles after 'serious lapses of judgment' over his association with convicted sex offender Epstein.
He is set to move from the Royal Lodge, in Windsor Great Park, in 2026 to the King's private Sandringham estate as part of his internal exile.
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Buckingham Palace will hope that the action draws a line under the scandal that has dogged Andrew.
But questions remain over allegations made by the late Virginia Giuffre that she was sexually abused as a teenager by the former prince.
Andrew paid millions to settle a civil sexual assault case with her in 2022.
He has always insisted he had never met her and denied all allegations.
The Metropolitan Police is also looking into claims Andrew passed Ms Giuffre's date of birth and social security number to his taxpayer-funded bodyguard in 2011 and asked him to investigate.