A growing body of international evidence reflects the increasing recognition of evidence-based policing (EBP) and the co-production of research, yet the extent of which such research is being implemented remains unclear. This study seeks to explore the efficacy of EBP in relation to practical implementation issues and assess the impact research is having on practice, both within and external to a specific Constabulary. Twenty-nine research studies, conducted in association with the Constabulary, were examined using a mixed-method approach. Of the total projects, 52% of projects were found to have generated a change to practice or policy. The key features of research that were associated with impact included: (i) mixed-method data collection, (ii) transferability, and (iii) increased dissemination that engaged practitioner and academic audiences. Practically, these findings suggest that EBP research projects can be designed and disseminated in a way that increases the likelihood of implementing the findings to change practice.