It's a very worrying situation and more research is needed on the most effective punishment and treatment of offenders caught viewing child abuse pictures.
"Trying to stop the terrible trade in these images is obviously a huge task.
"But it mustn't be seen in isolation. It's part of a much bigger sexual abuse problem."
More top news
A 21-year-old man who is paralysed from the neck down can walk again thanks to a mind-controlled robotic skeleton.
The weather slowly improving as we drift into a new month.
A man with no recollection of who he is has been found in London, with police appealing for help to identify him.