The California-based royal had fought the dismissal of his High Court claim against the Home Office over the decision of the Executive Committee for the Protection of Royalty and Public Figures (Ravec) that he should receive a different degree of protection when in the country.

But Sir Geoffrey Vos, Master of the Rolls, said in his ruling this after in London: 'These were powerful and moving arguments and that it was plain the Duke of Sussex felt badly treated by the system.

'But I concluded, having studied the detail, I could not say that the Duke’s sense of grievance translated into a legal argument to challenge RAVEC’s decision'.

He added: 'My conclusion was that the Duke of Sussex’s appeal would be dismissed'.