The Northern Ireland Embedding Wellbeing in Local Government Programme ran from 2017 to 2021. Carnegie UK provided significant financial and in-kind support to three Community Planning Partnerships to overcome challenges in implementing their Community Plans. The activities supported included development of the infrastructure for co-production, participatory budgeting and citizen engagement; opportunities for improving shared leadership across public services and; improving use and communication of evidence and data. This report describes the work undertaken and the findings as they relate both to Community Planning and more broadly to improving wellbeing in Northern Ireland. It concludes with 18 recommendations for improving wellbeing in Northern Ireland. The summary report can be accessed here. A toolkit on co-production produced as part of the project can be accessed here.