“William is very stubborn and private. He keeps his movements and calendar away from Charles’ team to such an extent that he won’t listen to anyone or take guidance from [his father] or his team,” the source explained. “He keeps things very locked down and separate.”

Kate Middleton, Prince William and their kids Prince George, Princess Charlotte and Prince Louis are set to spend Christmas at Sandringham with King Charles, joining the rest of the royal family for their traditional holiday celebrations after a very abnormal year.