Child protection expert Mark Williams-Thomas said the Prime Minister should be clear that today's announcement is more about stopping children and young people accessing child abuse images "rather than tackling offenders accessing this material".
However, Mr Williams-Thomas acknowledged on Twitter that it was "a good step forward":
Criminologist Mark Williams-Thomas has told Daybreak that "there needs to be an international approach to tackle child abuse images on the internet."
Mr Williams-Thomas was the man behind the ITV Exposure documentary which originally aired the abuse allegations against disgraced presenter Jimmy Savile.
Criminologist and child protection expert Mark Williams-Thomas told Daybreak: “They were living with him and did not know. They really were living with a monster.
"And for anyone outside who says ‘why did you not know? Why did you not see what was going on?’ I can completely understand. I’ve spent a lot of time with the family, I’ve spoken to the people who knew him and I tell you what he was a normal person.”
Mark Williams-Thomas, the criminologist who led the initial ITV Exposure documentary that revealed the Jimmy Savile abuse claims, described the West Yorkshire Police report as "poor".
Mark Williams-Thomas, the criminologist who led the initial ITV Exposure documentary on Jimmy Savile, has commented about the adult victims of child abuse in light of Newsnight's suspension.
Mark Williams-Thomas, the criminologist who led the initial ITV Exposure documentary that revealed the Jimmy Savile abuse claims, has tweeted that a follow-up programme will be broadcast in just under two weeks' time.