This Reuters piece repays close reading:
Crucially, for the people around Alum Rock, [Jahan] Mahmood takes no public funding for this part of his work. The fact his initiative lies outside of Prevent gives it credibility…
Also:
Prevent is derided by many Muslim groups for relying heavily on the police, for bureaucracy and incompetence, and for being open to exploitation by cash-hungry groups with questionable claims to community leadership.