Anti-terror experts fear children as young as nine are exhibiting signs of Islamic extremism.
And police have revealed a total of 2,653 young people aged 15 to 24 were referred to government-funded de-radicalisation programmes between 2006 and 2013.
According to a report by Islamic campaign group CAGE, schoolchildren are being reported to the authorities by schools, youth workers and doctors, amid concerns they are exhibiting signs of extremism.