Its head of child protection John Cameron said: "We want this to mark a cultural shift so that if a child speaks out against someone, we take what they are saying seriously and we act upon it always in future".
Christina Aguilera opening up about finding "new love and a fresh start" after a divorce and a drunken arrest sold about 531, 000 copies on the newsstand, the second-worst seller of 2011 after Elton John posing with his child.