He told Newsweek that the think-tank’s case is not over as they will seek to appeal the ruling, adding: “President Trump has already suggested that Prince Harry will be deported next year – and the case for that just got a lot more compelling! Americans deserve an immigration system with both secure borders and also fairly applied rules for high-profile immigrants like Harry.”

Mr Howell added: “It certainly appears that Harry was given special treatment… and now we know it for something so serious that it involves extensive redactions. Americans will know the full story soon enough… Perhaps, Mr and Mrs Markle will tell us what’s beneath the redactions on their next Netflix special.”

Judge Nichols’s ruling said: “Like any foreign national, the duke has a legitimate privacy interest in his immigration status.

“And the duke’s public statements about his travel and drug use did not disclose, and therefore did not eliminate his interest in keeping private, specific information regarding his immigration status, applications, or other materials.”