Unless people know their information is secure, how can they feel confident about coming forward to authorities?
Some people could get quicker help if they are referred to a de-radicalisation programme.
We asked two academics to check the claim made by UKIP leader Paul Nuttall.
Despite the growing threat from far-right groups, deradicalisation programmes have been largely targeting Muslims.
Referrals to the Channel programme are rising. Here's what happens to people suspected at being at risk.