Child protection expert Mark Williams-Thomas has told Daybreak the Prime Minister is "confused" in attempting to link internet searches with how paedophiles access and share child abuse online.
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."