EXCLUSIVE: Read the Secret Vow Prince William & Princess Catherine Have Made to Each Another Ahead of Being Crowned King and Queen

Insiders claim the royals are united in putting duty first.

Prince William and Princess Catherine are preparing to rule with an iron grip.

Sources tell us they’ve made a secret pact to put the Crown first – even if it means turning their backs on family.

William, 43, and Catherine, 44, are said to be increasingly focused on the future of the institution amid ongoing tensions surrounding Andrew, 66, and the wider fallout from his association with the late sex offender Jeffrey Epstein – as well as the monarchy’s ongoing estrangement from Harry and his wife Meghan Markle.

The issue has also affected Andrew’s daughters, Princess Beatrice, 37, and Princess Eugenie, 36, whose place within royal life has become the subject of growing speculation.

A source close to the Wales household told us: