Ken Wharfe was responsible for guarding Princess Diana’s life from 1988 to 1993, and he says that one of the toughest parts of being a royal protection officer was that the late royal “didn’t always welcome” his presence. However, he stresses that as a bodyguard, “You can only protect someone if they're prepared to accept that protection.” “That wasn't always easy because, like all of us, Diana was an individual who didn't always welcome it,” he shares. (Image credit: Getty Images)Princess Diana drives her Ford Escort at Guards Polo Club with Wharfe sitting next to her. Wharfe holds Princess Diana's door as she attends a ballet in 1988.