'Only one in 15 online child porn suspects is arrested: Chief constables accused of treating offences as a low priority.'

'We are dealing with a situation where we have an unpleasant and uncomfortable proportion of our population who somehow seem to think this is OK.’

Peter Saunders, of the National Association of People Abused in Childhood, said: ‘These are difficult crimes to prosecute and we’ve got to wake up to what we are letting happen to our children.

‘The culture has to change – all the agencies are failing our children and we need a Government that says enough is enough.’