Mark Williams-Thomas, a former police detective and presenter of the Exposure documentary that made public the Jimmy Savile abuse claims, told Daybreak that the investigation into Savile is "a watershed moment in child protection."
"I hope the legacy of my film is one that allows people to have the confidence to come forward," he said.
Jimmy Savile was questioned as a suspect by police investigating the Yorkshire Ripper, according to a retired police officer.
Jimmy Savile's nephew has spoken of the emotional turmoil his family is going through in the wake of the sex abuse allegations.
A colleague of Jimmy Savile allegedly raped a woman on BBC premises in 1970, ITV News has been told.