In a ruling today, Sir Andrew McFarlane, said Philip's will remain sealed for 90 years. He said: "I have held that, because of the constitutional position of the Sovereign, it is appropriate to have a special practice in relation to royal wills. "There is a need to enhance the protection afforded to truly private aspects of the lives of this limited group of individuals in order to maintain the dignity of the Sovereign and close members of her family."
Convention states that an application to seal the will of a royal is made to the President of the Family Division of the High Court.
This means their respective wills are not made available to public inspection.
Sir Andrew added that he had not seen, nor had been told of the contents of Philip's will.
He also added the ruling was to make all information as public as possible without defeating the purpose of sealing the will.
Prince Philip's will remain secret
Prince Philip died in April
Sir Andrew heard arguments put forward by representing Philip, who died in April and the Attorney General.
The judge revealed he had held a series of meeting in private in order to avoid undue to publicity and conjecture.
He added: "The publicity would, therefore, in part, defeat the core purpose of the application."
"I accepted the submission that, whilst there may be public curiosity as to the private arrangements that a member of the royal family may choose to make in their will, there is no true public interest in the public knowing this wholly private information.
Prince Philip's will will now remain sealed for 90 years
"The media interest in this respect is commercial. The degree of publicity that publication would be likely to attract would be very extensive and wholly contrary to the aim of maintaining the dignity of the Sovereign."
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Prince Philip: The Royal Family tree