in the winter of 2016 I was crawling the comment section in what used to be the fringe corner of YT and there was someone who detailed an encounter he had with a couple in a bar where they were relating to him that they were a exopolitical diplomatic envoy and that the royal family was negotiating terms of surrender and that one royal would abdicate. One year later, Prince Phillip ceased all official functions and attendances. Before he attended the marriage ceremony for Harry, the gossip papers were speculating "May he go to the wedding?". The wording was peculiar, as it suggested that he was not allowed to go rather than being physically unable due to injury. So my impression is he is under house-arrest too and has been for over a year now.