New figures released by the Home Office have revealed that thousands of people in London were referred to the government's counter-extremism programme in 2015-16.
Published on Thursday (November 9), the statistics show that 1,915 individuals in the capital were subject to referral due to concerns they were "vulnerable to being drawn to terrorism," the Home Office said in the report.
According to the government department, the purpose of Prevent is to stop people from "becoming terrorists or support terrorism ".
Across England and Wales, 7,631 people were referred in the 12 months to March 2016, with most referrals being made by schools and other educational institutions.
Of the 1,915 people referred to the programme in London, only 94 received specialist support through the Channel scheme, which deals with "all forms of extremism" - including far-right and Islamist.
The report has also revealed that nationally more than half of those referred to the scheme were aged 20 or under.
Ben Wallace MP, the security minister, said in response to the publication: “At its heart, the Prevent programme is just one of a number of ways to safeguard vulnerable people from exploitation.
"The voluntary Channel scheme has seen real results in helping divert people away from terrorism and violence The programme is helping to save lives and keep us safe.”
He continued: “The government has been determined to bring greater transparency to the programme and I am delighted that by publishing these figures we can help inform the debate around the policy."
The findings have been criticised by NGOs, as well as by Labour politicians, including Diane Abbott and Naz Shah.
Human rights organisation Liberty argued that different groups have raised concerns that Prevent "fuels racial and religion discrimination".
Liberty director Martha Spurrier said: "Yet the government has failed to publish any figures on the religion or ethnicity of those referred.
"How can ministers even begin to command public trust in Prevent without real honesty and transparency about its impact?"
Describing the statistics as "worrying", Ms Spurrier added: "They show a sharp rise in the number of people referred, with children disturbingly overrepresented.
"And large numbers of cases where no further action is taken, with no analysis of the potentially devastating and stigmatising effects on those incorrectly referred."
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