As Andrew Mountbatten-Windsor is arrested on the Sandringham estate and becomes the focus for an investigation into misconduct in public office, royal author Nigel Cawthorne looks at how the late mother of the former prince couldn’t see what was obvious to everyone around her T he former Prince Andrew has made an undignified descent from Buckingham Palace to a police cell. His inexorable fall has been long and hard, but he has been protected by royal privilege almost every inch of the way. If