This report derives from one aspect of the research conducted under the IMPACT Europe project. IMPACT Europe is a project funded by the Seventh Framework Programme2 that seeks to identify what works in tackling violent radicalisation, or countering violent extremism (CVE), as it is often more recently referred to. A major part of the project was focused on developing an interactive evaluation toolkit which draws on current evaluations of CVE. Given that the main challenge relates to the limited number of high-quality evaluations of CVE interventions, examples of CVE evaluations collated by IMPACT Europe were insufficient to populate the evaluation toolkit and to advance the evaluation culture in the field. Consequently, given the need for useable and informative comparative research, we looked more widely at the more developed and rigorous evaluation studies in various areas of criminology.