Everyone in England already knows it, including the Royal Family. No need to make it official. They do not operate like that. They did draw the line at Diana being the mother of an Arabian Muslim child. There was no car "accident" that killed her. It was all planned.
My wife of 25 years was born and raised in London. She has enlightened me on the royal truth.
You might scoff at my assertion but if you truly understand the depth of tradition and the sanctity of the throne, removing Diana from the face of the earth was an easy decision. She hated them and was determined to stick it in and break it off. They beat her to it.