Keir Starmer has said he hopes Prince Andrew will speak to US authorities over his links to Ghislaine Maxwell and paedophile billionaire Jeffrey Epstein.
The Labour leader was asked if he would have cooperated with a US request to quiz the royal if it had arrived when he was Director of Public Prosecutions.
Mr Starmer said he would and urged Prince Andrew to coperate with investigators.
Mr Starmer said that “of course” Prince Andrew should co-operate with the FBI over Jeffrey Epstein and Ghislaine Maxwell
“It doesn’t matter who you are. You co-operate with the law-enforcement authorities when they ask you to do so,” he added.
The row over Prince Andrew answering questions has rumbled on for months, with the Duke’s lawyers insisting he has offered to help.
But lawyers for the Southern District of New York, who are running the investigation, have accused Prince Andrew of not cooperating.
Geoffrey Berman, US Attorney for the Southern District of New York, said Prince Andrew had “sought to falsely portray himself to the public as eager and willing to co-operate” with the investigation into sex trafficking by Jeffrey Epstein and his associates,.
Last month The Duke of York’s lawyers rejected claims he has not cooperated with inquiries.
In a statement Prince Andrew’s legal team said: “The Duke of York has on at least three occasions this year offered his assistance as a witness to the US Department of Justice”.
“Unfortunately, the DoJ has reacted to the first two offers by breaching their own confidentiality rules and claiming that the duke has offered zero co-operation. In doing so, they are perhaps seeking publicity rather than accepting the assistance proffered.”
It came after the Duke of York’s friend Ghislaine Maxwell appeared in court in the accused of helping disgraced financier Epstein ‘”identify, befriend and groom” multiple girls, including one as young as 14.
US prosecutors have reportedly lodged a formal request to interview Prince Andrew, a friend of Epstein’s, made through the filing of a Mutual Legal Assistance (MLA) to the Home Office.
The Department has said it will not confirm the MLA request.
An MLA is part of an agreement with the United States that means they can ask for assistance from British authorities in criminal matters.
But it cannot force the Prince to cooperate in the immediate term.
A source close to the Duke reportedly told the Sunday Telegraph: “We’ve been in contact with the US Department of Justice saying we’re willing to offer assistance. The Duke has indicated his intention to cooperate with the investigation and the ball is now in their court.”
Maxwell, daughter of late media mogul Robert Maxwell, has denied any wrongdoing or knowledge of sexual misconduct by her former boyfriend Epstein.
Epstein killed himself last August before facing trial on sex trafficking and conspiracy charges.
One of Epstein’s victims, Virginia Giuffre, who claims she was trafficked by the financier, alleges that Prince Andre had sex with her on three separate occasions.
He has categorically denied he had any form of sexual contact or relationship with Ms Giuffre.