The Motivational and Engagement Intervention (MEI) and the Healthy Identity Intervention (HII) were developed by HMPPS to encourage and facilitate desistance and disengagement from extremist offending. They were piloted between 2010 and 2011. A process evaluation of the pilot explored the implementation using a qualitative approach. Twenty-two intervention participants and 22 facilitators who delivered the programmes were interviewed. This summary presents the findings of the process evaluation as the first indicative step toward establishing whether the MEI and HII programmes are useful in facilitating desistance and disengagement, and preventing future extremist offending. The findings have led to a number of programme revisions, including the two programmes being combined into a single programme called Healthy Identity Intervention.