A colleague of Jimmy Savile allegedly raped a woman on BBC premises in 1970, ITV News has been told.
The alleged victim, who wishes to be known as 'Penny,' is a former model who had been invited to the BBC to be on one of Savile's shows.
She told ITV News that Savile's colleague "raped me without a shred of a doubt".
UK Editor Lucy Manning reports:
'Penny' has informed the police of her allegations and now wants to see arrests and some justice.
The latest allegation comes after Scotland Yard confirmed that officers investigating the Savile abuse scandal are dealing with around 300 alleged victims.
Commander Peter Spindler said officers are following more than 400 lines of inquiry linked to the victims, of whom all except two are women.
He said investigators have so far spoken to 130 people who have come forward, and 114 allegations of crime have emerged.
Officers are using a "triage" approach, first making contact with victims by phone to get initial details of their allegations, Mr Spindler said.
He told reporters that most of the allegations are linked to Savile, but some involve others who may have acted with him.
The inquiry will be a "watershed" moment in the investigation of child abuse, he said.
Nobody has yet been arrested or interviewed under caution as yet, but the force is "preparing an arrest strategy".
Officers are trying to contact victims as quickly as possible, but for some it is the first time they have spoken about the allegations, Mr Spindler said.
Praising victims for their courage in coming forward, he encouraged anyone else who is wondering whether to speak out to do so.
Mr Spindler said Savile was "undoubtedly" one of the most prolific sex offenders of recent history.
He said allegations reported today that doctors in hospitals had been involved in abuse "hadn't come through to us at the moment".
He said that the weight of evidence against the late DJ was overwhelming and that police "have to believe what they are saying because they are all saying the same thing independently".