Scotland’s centre of expertise connecting water research and policy (CREW) delivers objective and robust research and professional opinion to support the development and implementation of water policy in Scotland. Although the importance of demand-driven science to support policy and practice is increasingly recognised, it is not easy to ensure that information is communicated effectively, to the appropriate end-users, in a suitable format, and at the best time to impact on policy or practice. There has been little evaluation of what makes for ‘good’ knowledge exchange that improves interaction, and no agreed methodology for evaluating these practices.