The late TV presenter Jimmy Savile was a "horrific, prolific sex offender" who abused his fame and power to get away with his crimes "for so long", the NSPCC has said.
The NSPCC's Director of Child Protection Advice and Support, Peter Watt, spoke to Good Morning Britain after the children's charity released figures showing Savile had abused children "as young as two", with at least 500 of his victims coming forward.
The NSPCC believe that Jimmy Savile could be the most prolific child abuser that they have ever discovered in the United Kingdom.
Peter Watt, the NSPCC's director of child protection, said: "There's no doubt that Savile is one of the most, if not the most, prolific sex offender that we at the NSPCC have ever come across.
What you have is somebody who at his most prolific lost no opportunity to identify vulnerable victims and abuse them."
The joint BBC investigation between Panorama and The World At One, which airs today on BBC One and BBC Radio 4, asks how the DJ got so close to the heart of Britain's establishment and why in 1972 the BBC failed to take effective action that might have saved young people from abuse.
The NSPCC report also claims that Saville's offending in Broadmoor Hospital is higher than previously thought, with Thames Valley Police having received at least 16 reports of abuse by him inside the secure hospital.
The report also claims that senior civil servants wrongly referred to the Top Of The Pops presenter as "doctor" - completely unaware of the trauma he was inflicting on some children behind closed hospital doors.
At least 500 children, some as young as two years old, were abused by disgraced television personality Jimmy Saville during his vile reign as one of the UK's most prolific sex offenders, new research shows.
A study carried out by the National Society for the Prevention of Cruelty to Children, commissioned for the BBC's Panorama programme, reveals secret confidential documents examining the scope of Savile's offending and his unprecedented access to Broadmoor hospital, where some of the abuse happened.
The government is to launch an inquiry into its own decision to appoint Jimmy Savile as a head of a 'task force" overseeing the management of Broadmoor Hospital in the 1980s.
Allegations emerged this week that Savile had abused patients at the high security psychiatric hospital in Berkshire after being given free access to the wards.
He was a volunteer there for four decades, had his own set of keys and in 1988 was appointed to help oversee the running of the hospital, something the Department of Health now says should never have happened.
A high security hospital in Berkshire that houses some of the country's most dangerous criminals has been branded ‘not fit for purpose’ and facilities are being upgraded for patients and staff. The Department of Health is to invest £298 million in the Victorian site at Broadmoor Hospital.
Facilities at the hospital, which treats patients with some of the most challenging cases of psychiatric and mental health problems in the country, will be improved "to make sure that patients have access to the right treatment in a secure and safe environment"
The investment of £298 million follows the Commission for Health Improvement report in 2003, which concluded that “the accommodation at Broadmoor Hospital is no longer fit for the delivery of modern mental health services”.