A fourth unknown celebrity has been identified by woman, who said she was abused by him as a child, in light of the ITV documentary which made allegations about TV presenter Jimmy Savile.
As well as Savile, singer Gary Glitter, 68, and comic Freddie Starr, 69, have been caught up in the scandal. Starr has denied accusations he molested a girl in Savile's BBC dressing room when she was 14.
A member of the ITV production team told The Telegraph: "We have had a name given to us which is so far not in the public domain.
Jimmy Savile: Other celebrities could be accused of sex abuse around the time allegations were made about the presenter
The fourth celebrity identified by the woman is believed to be still alive.
"It relates to a celebrity, a media personality, who is alive. We are urging everyone who contacts us to go straight to the police."
There are a growing number of allegations that the former TV presenter Savile groped young patients at Stoke Mandeville Hospital in Buckinghamshire, where he worked as a volunteer fundraiser.
Nurses at the hospital are understood to have dreaded his visits. They would tell children to stay in bed and pretend to be asleep when he came round, it has been claimed.
A number of memorials to Savile have already been removed, including an inscription on the wall at Leeds Civic Hall in recognition of his charity work, and a street sign in Scarborough, North Yorkshire.
Commander Peter Spindler, head of Specialist Crime Investigations, said the abuse was on a "national scale" and that the allegations spanned four decades.
Scotland Yard has been in contact with ITV and the BBC to gather information and they are contacting alleged victims they have been talking to to see if they will co-operate.
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Updated 18:35 9 October 2012: headstone information