A former BBC Radio 1 researcher told Channel 4 News that he was once in a meeting with another producer when Jimmy Savile boasted about having had sex with 14-year-old girls that morning.
Richard Pearson said Savile was "doing his comedy presenter routine, and one of the things he said, not particularly quietly, was that he'd 'had' three 14-year-old girls in his trailer that morning.
"And when he said 'had' he didn't mean they'd come to criticise his curtains."
Mr Pearson said that Savile gave him the impression that the activities were "common knowledge" and that the entertainer was "pretty much untouchable, and that was why nothing ever got done about it."
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.