A report into Jimmy Savile's abuse at the BBC hasn't ruled out the possibility that a child abuser could remain there today.
Dame Janet Smith's review found bosses didn't know past sexual abuse was happening - and that the corporation can't be held responsible.
Meanwhile, presenter Tony Blackburn has denied wrongdoing after being sacked over evidence he gave.
BBC director-general Tony Hall has explained his decision:
However, the report says some junior and middle-ranking workers knew about Savile's behaviour.
Esther Rantzen, who used to work at the BBC, says the information wasn't passed onto management;