This volume critically examines how the integration of evidence-based research within police governance reshapes accountability, decision-making, and policy development. Focusing on the transition of a well-established police research unit from the Metropolitan Police Service to the London Police and Crime Commissioner’s office in 2014, the book explores the broader implications of this move for data-driven oversight and police practice.

Bringing together contributions from experts directly involved in this transition, the chapters combine original research, case studies, and applied analysis to demonstrate how evidence informs policing at both strategic and operational levels. The book introduces the concept of "evidence-based oversight," offering a new framework for understanding the evolving role of research in shaping police governance and accountability structures.

With insights for PCC staff, police professionals, policymakers, and scholars, this volume provides a critical perspective on how empirical research can enhance policing practices, drive reform, and strengthen oversight mechanisms within criminal justice systems.