Earlier this year, Harry lost his High Court appeal against the Home Office’s decision to downgrade his security. He later described the ruling as “a good old-fashioned establishment stitch-up.”

The renewed push for a review could, however, complicate the Duke’s fragile reconciliation with the King. According to The Sunday Times, palace sources say the issue remains a sensitive one, with Charles previously avoiding direct contact with his son during the court case to prevent being drawn into what could be seen as a constitutional dispute.

Despite speculation of family tension, sources close to Harry insist he is not asking for his father’s intervention. “He simply wants the security assessment he believes he is entitled to,” one insider said.

A spokesperson for the Duke of Sussex declined to comment.