Home Office, Prevent strategy 2011
"The Prevent strategy has been re-focused following a review. The strategy now contains three objectives: to respond to the ideological challenge of terrorism and the threat from those who promote it; to prevent people from being drawn into terrorism and ensure that they are given appropriate advice and support; and to work with sectors and institutions where there are risks of radicalisation that we need to address."
There's a set of pdfs on the page, including versions in Arabic and Urdu.
I have yet to read any of these documents in detail.