This impact report is for Public Health Wales staff, and stakeholders working across the wider public health system in Wales. It sets out the range of work which the Behavioural Science Unit has undertaken over 2025-2026, focusing on how the Unit is progressing against the areas outlined in the Behavioural Science Enabling Plan for Wales. It acknowledges the partners who have worked with the Unit, provides insight for those that are considering future collaboration, and reflects on the contribution of collective activities towards the routine application of behavioural science for better health and equity.