A separate insider shared that the royal family has asked Harry and Meghan to stop using their HRH titles, but they’ve yet to do so. Because of that, the source said agitated Prince William could “simply issue new letters patent to formally remove the entire family’s right to use HRH when he becomes king.”
“It will likely be presented as part of a wider tidying up exercise to reduce, more broadly, the number of HRHs in circulation,” the source noted. “He could, for example, say that only working royals are entitled to use HRH, which seems sensible if you are trying to modernize, or specify that only children of the monarch are HRH, not the grandchildren, which would have the added advantage of making things clearer for their own kids’ families in due course.”