This document outlines the key elements of the UK’s Channel programme. The Channel programme has been developed to provide support to people at risk of being drawn into violent extremism., This document, which draws on best practice and lessons learned, provides the UK police and local authorities with advice on the implementation of Channel. It also describes both indicators and causes of violent extremism. The document should be read in conjunction with other Prevent guidance including ‘The Prevent Strategy: An Updated Guide for Local Partners’.