Although the use of restorative justice to help overcome the harm of crime and conflict is by no means a recent development, the past decade has seen increasing emphasis on the integration of restorative justice into organizational policy, particularly in criminal justice settings. For example, the EU’s 2012 Victims’ Rights Directive, the Council of Europe’s 2018 recommendation to ‘develop and use restorative justice with respect to their criminal justice systems’, the European Commission’s 2020-25 EU wide Restorative Justice Strategy, and the 2021 Venice Declaration on the Role of Restorative Justice in Criminal Matters. At the same time, there has been a growing number of practice applications in prisons, youth justice settings, and police forces. This paper examines one such development, presenting work from a series of focus group events with experienced restorative practitioners, service delivery leads, commissioning providers, resolutory body leads, and expert academics. The events were held to support the Metropolitan Police Service (UK) in redeveloping their restorative justice policy for use across London. The evaluation identified key areas for consideration when developing restorative provision within a police service, including: the importance of workable definitions and applications of RJ; the benefits of different funding models; approaches for effectively integrating restorative justice into policy and practice across policing organizations; developing organizational ‘restorative culture’; dealing with serious and complex cases; and measuring and evaluating successes. The findings have wide relevance, offering a guide for police services considering the development of a restorative justice programme.