Sentencing Watkins, Mr Justice Royce described him as a 'sexual predator' and told him he was a danger to the public.
I am satisfied that you are a deeply corrupting influence; you are highly manipulative; you are a sexual predator; you are dangerous. The public and in particular young females and children need protection from you.
– Mr Justice Royce
He said that Watkins told the author of a pre-sentence report of a 'desire to shock' and the report concluded Watkins presented a 'high risk.'
This craving was fuelled by your use of cocaine and methamphetamine which increase your sexual aggression. You spoke of not knowing to what extremes you would have gone but for your arrest. It is difficult to imagine anything much worse.
The author concludes 'Mr Watkins presents a high risk of causing serious sexual, physical, emotional and psychological harm to children, both male and female, and to women, specifically his female sexual partners.
Detective Daniel Minto from South Wales Police was one of the officers who trawled through the vast amount of data found on Ian Watkins' computer. He said the sheer scale of the operation was the biggest challenge and described Watkins' as a 'technically switched-on individual.'
Trial judge Mr Justice Royce told Ian Watkins during sentencing that the case was one of the most horrific he has seen in court. Condemning the lead singer's sex crimes, some too distressing to report, in the strongest possible terms, he said Watkins was a dangerous sexual predator.
"Those who have appeared in these courts over many years see a large number of horrific cases. This case, however, breaks new ground. You, Watkins, achieved fame and success as the lead singer of Lostprophets.
"You had many fawning fans. That gave you power. You knew you could use that power to induce young female fans to help satisfy your insatiable lust and take part in the sexual abuse of their own children.
"Away from the highlights of your public performances lay a dark and sinister side. I am satisfied that you are a deeply corrupting influence, you are highly manipulative, you are a sexual predator, you are dangerous."
Suzanne Thomas, senior Crown Prosecutor at CPS Wales, speaking after the sentencing Watkins was the "ringleader" of a "terrible conspiracy" to commit "appalling crimes of abuse against young and defenceless victims."
These three defendants conspired to commit appalling crimes of abuse against young and defenceless victims.
The prosecution case was that Ian Watkins was the ringleader of this terrible conspiracy and it is right that his sentence reflects this.
He is a highly dangerous and manipulative individual who preyed on his victims in a calculated manner. The other two defendants were active participants in the most shocking abuse of their own children. They too have received sentences that reflect their admissions of guilt for these offences.
It is incomprehensible that adults would commit such appalling acts against children and young people and our thoughts remain with the victims and those close to them.
The detective leading the investigation into Ian Watkins says the evidence was the 'most disturbing' he has seen in his career.
Today's sentence reflects the gravity of the crimes that have been committed. The three paedophiles responsible for the terrible abuse of two babies have now been brought to justice.
The investigation uncovered the most disturbing child abuse evidence I have seen in my 28 years as a police officer. The guilty pleas have ensured that the jury were spared from viewing evidence that would have been extremely traumatic.
The safeguarding of children has been an absolute priority for the investigation team.
Today’s sentence does not mark the end of our investigations and we will work tirelessly to identify any other victims or witnesses and seek the justice they deserve. In the last few weeks we have received further information that will now be looked at by the investigation team.
There are also investigations being conducted by other police forces around the world including Germany and the United States.
Above all this investigation has been focused on the protection of children and my thoughts today remain with those victims.
– Detective Chief Inspector Peter Doyle, South Wales Police
Police are urging anyone affected by the case to contact them on 02920 634184 or the NSPCC on 0808 800 5000.
Ian Watkins has been sentenced to a total of 29 years in prison, not 35 as initially reported. He must serve two thirds of his sentence before he is eligible for parole. Once released from prison, Watkins will serve a further six years on licence.
In his summing up comments ahead of sentencing, the judge said Ian Watkins and his co-defendants committed "sickening and incomprehensible" crimes.
The details of the offences, many of which have been two graphic to report, were condemned in the strongest possible terms by the judge, as he reflected on how the singer used his power and celebrity to "partake in insatiable lust."