Meghan and Queen Elizabeth once reached an agreement that prohibited the Duchess of Sussex from using the HRH title for commercial purposes.

Meghan has defied a deal with the late queen to continue using her HRH title. King Charles is turning a blind eye. King William won’t.

When Prince Harry and Meghan stepped back as working royals, one of the conditions on which they forged their independent lives was that they would retain their HRH titles but not use them. Standing for His or Her Royal Highness, the styling is held by senior royals in lieu of their position within the monarchy.