A court battle is brewing over Prince Philip's will

The document is going to be kept secret for 90 years, according to a ruling earlier this year.

In September, Andrew McFarlane, president of the High Court's Family Division, ruled that Philip's will would be sealed for 90 years. Among the few present was a lawyer representing the duke's estate from law firm Farrer & Co, the Queen's private solicitors, and the attorney general, the government's chief legal adviser. The media weren't told of the hearing or permitted to attend, with the public interest represented by the attorney general.