The definitive and most authoritative biography of Queen Elizabeth II, written by Britain's most respected political biographer--who had unprecedented access from Buckingham Palace to those close to the queen. New sources include the unpublished diaries of Jock Colville, who served as private secretary to both Churchill and Elizabeth, as well as interviews with Princess Margaret, royal dressmaker Hardy Amies, Archbishop of Canterbury Lord Runcie, and long time private secretary Lord Charteris.