More here on the further eight:

Ex-detective Mark William-Thomas, who is presenting tonight's documentary Exposure: The Other Side Of Jimmy Savile, said: "Up to eight women have come forward for the first time to tell me their stories over the last few days.
"I have urged them to go to the police. It is quite clear from this early response that there are lots more women out there with similar stories to tell."

And this is important:

"Today it also emerged that at least four police forces investigated claims that Savile molested children, while Scotland Yard is looking into an allegation of rape dating back to 1986."

http://www.standard.co.uk/news/crime/jimmy-savile-sexually-abused-us-say-eight-more-women-8195670.html