The Children's Commissioner is launching a new two-year nationwide inquiry into child sex abuse in families.
The inquiry will particularly look at the issue of forced marriage, since this is thought to often lead to abuse.
Among the questions examined will be how widespread the problem is, how to support victims and how to prevent abuse.
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Mr Styles, 25, went to the police after the defendant’s “erratic and frightening behaviour” left him feeling insecure at home.
Speaking to ITV News, Charlotte Charles said at the time of Harry's death the family thought justice would be "simple".