Prince Harry and Meghan Markle

More controversially, Sykes predicts that William also plans to remove royal titles from his younger brother and sister-in-law, Prince Harry and Meghan Markle.

Relations between the brothers have remained tense since 2020, when Harry and Meghan stepped down from royal duties and relocated to California, accusing senior royals — including William and Kate — of mistreatment and bullying.

Though they continue to hold the Duke and Duchess of Sussex titles, Sykes claims that William intends to formally revoke both the dukedom and their HRH styles once he becomes king. “Meghan and Harry will also see their dukedoms and HRHs formally revoked by the new king,” he told The Daily Beast.

Archie and Lilibet

Even Prince Harry’s children, Archie and Lilibet, could be affected. The siblings, now six and four, were granted the titles of prince and princess after the accession of King Charles III.

But under William’s rule, Sykes believes their titles could be quietly suspended. “William’s own children may have their titles informally parked until they become adults and can decide for themselves if they want to be full-time working royals or lead lives as private citizens,” he said.

For now, Buckingham Palace has not commented on the claims, but if Sykes’ predictions prove true, King William’s reign could usher in one of the most dramatic overhauls of royal titles in modern history — a move signaling his determination to slim down and redefine the monarchy for a new era.