A TV investigator has claimed two other high-profile Jimmy Savile-esque cases are yet to be revealed.
Savile was an English media personality who was well known for his eccentricities and, at the time of his death, was generally respected for his charitable work.
He was knighted in 1990.
But in late 2012, almost a year after his death, reports surfaced indicating that Savile had committed sexual abuse throughout his 50-year career, his alleged victims ranging from prepubescent girls and boys to adults.
Mark Williams-Thomas helped unmask him - and he says there are two other celebrity sex predators still out there.
The 48-year-old claims the pair are “high-profile”.
Williams-Thomas also said the "floodgates will open” when one of them dies.
Much of Savile's career involved working with children and young people, including visiting schools and hospital wards.
He spent 20 years presenting Top of the Pops before a teenage audience, and an overlapping 20 years presenting Jim'll Fix It, in which he helped the wishes of viewers, mainly children, come true.
During his lifetime, two police investigations had looked into reports about Savile, the earliest known being in 1958, but none had led to charges; the reports had each concluded that there was insufficient evidence for any charges to be brought related to sexual offences.
The investigator says he is “convinced” two other well-known faces think they are “untouchable”.
Williams-Thomas told a Media Masters podcast: “There are other people out there.
"There are two particular high-profile individuals that I know about who I’m convinced are sex offenders.
“I’ve brought that attention to the police
" I know that when one of those people dies the floodgates will open."
He added: “This concept of the untouchables still exists.
"Jimmy Savile put himself in a position where he was untouchable and there are still individuals who fall into that place.”
Like thousands of children growing up in the Midlands in the 1970s, Mark Williams-Thomas saw Savile on TV presenting his Jim’ll Fix It Show.
He never met the DJ nor formed a particular opinion of him – apart from observing that he was “a bit weird”.
But he is the man who exposed Savile as a predatory paedophile who wrecked the childhoods of hundreds of vulnerable youngsters across Britain.
Until then their allegations had been ignored or swept under the carpet.
The programme also led to Operation Yewtree, which confirmed that Savile was a predatory paedophile who had abused children across the country and exploited his position to gain sexual gratification.
Police also began to probe historic child sex abuse allegations made against other media personalities.
Investigative journalist Williams-Thomas, a former detective, today reveals that the Yewtree investigation, led by the Metropolitan Police, is due to begin criminal probes into two more high-profile British figures.
“I continue to receive information about alleged victims,” he told the Sunday Mercury. “There are two very high-profile individuals who, in due course, will be subject to criminal investigations.
“One is someone who is in the media world, the other has a high public profile.
“It is all about collecting that evidence and doing it at the right time.”
The journalist first learned there were serious allegations about Savile being a paedophile a month before the DJ died on October 29, 2011.
BBC Newsnight producer Merion Jones told him of claims that Savile had abused girls at Duncroft Approved School in Staines in the 1970s.
The son of a former Solihull GP, Williams-Thomas attended Eversfield Preparatory School before his family moved to Surrey, and was working on a separate case at the time.
He had switched from his police career with Surrey Police 11 years earlier, and was credited for beginning investigations into music mogul Jonathan King, who was jailed for sexually abusing five boys aged 14 and 15 during the 1980s.
Williams-Thomas said: “I was going to Interpol in Lyon to do a report for Newsnight on something completely different when the producer asked me if I had heard anything about Jimmy Savile being a sex offender.
“He said there was some stuff on the internet but it was fairly anonymous.
“I said ‘No, he’s a weird bloke, I wouldn’t let him anywhere near my children’. Newsnight was looking to do something but Savile was still alive.
“He called me again when Savile had died. But the Newsnight programme was shelved. They only had one victim who would be broadcast.”
