ITV's Exposure reveals footage of honour killing victim Banaz Mahmod telling police she fears for her own safety months before her murder.
ITV's Exposure investigates the care homes business in Britain.
ITV1's Exposure witnesses poverty, drugs and anger on a Grimsby estate and meets the residents forced out by revenge attacks.
Conservative MP Damian Collins MP asks the BBC Director-General if he accepts if it was not for ITV there would be no investigation.
George Entwistle said: "Yes I accept that it is a matter of great regret."
The fourth person mentioned in the abuse inquiry is believed to be a soap actor, although it's unclear they are a current or former star.
The team behind the ITV Exposure documentary that made the Savile allegations have been given the name of a fifth person, also thought to be a TV personality, amid ongoing claims of abuse.
The team behind the documentary that revealed claims of sexual abuse against Jimmy Savile have passed on details of alleged abuse by another celebrity to the Metropolitan Police.
The claims were made by a caller to the ITV Exposure team following the Savile documentary but are not thought to be linked to the Savile allegations.
The allegations are thought be related to a TV personality who is alive.
Mark Williams-Thomas, the former police detective who led the ITV Exposure documentary that uncovered the Jimmy Savile abuse allegations, says that he has received "significant information" about the late TV presenter: