@cyclamenqueen - it is possible to both hate the press (I think both brothers do) and a take a dispassionate view on how best to manage future family privacy issues (they've done differently, but each will have chosen depending on what is right for them ad their families)
@AInightingale - the Regency Act means that the person who would rule until a child heir reached 18 would be the next person over age of 21 in the succession. But it can't be Harry as he is living happily overseas with his family.
Next are three non-working Royals, Andrew (unacceptable), Beatrice and Eugenie. Then Edward (offspring still too young to be potential regents) then Anne.
So Parliament would need to depart from that. Best case scenario is that all the Counsellors of State petition Parliament to install Anne and Edward as a Co-Regency, with Catherine having guardianship and full responsibility for his upbringing and education
(Edited to make it a bit clearer - I hope - about what Edwards's DC are too young for)