Abstract: This report is a longitudinal analysis of the delivery, efficacy and effectiveness of Surf Action’s five year ‘Centre of Excellence’ Project which was funded by the National Lottery Reaching Communities Fund. Throughout the project Surf Action has collected data in numerous audit areas and then reviewed its service and delivery at the end of each year making appropriate changes/improvements which were then carried forward into the following years. This included developing Surf Action’s own ‘Joined-Up Recovery Model’ and doubling the number of audit areas from 12 to 24 at the end of the first year. As the complexity of the project increased this also involved fundamentally re-structuring the charity itself and bringing in additional expertise to ensure the best quality delivery, oversight and governance. At the end of each year a comprehensive report was also submitted to the National Lottery. Both qualitative and quantitative data is used to illustrate the effect of the project on its participants over time. The quantitative data is derived from a baseline (T1) and 9-month post intervention (T2) questionnaire completed by all participants since 2013 (and subsequently modified). In the first year this involved the collection of some personal data and the completion of a validated wellbeing and emotional needs audit. From the second year onwards more personal information regarding employment, alcohol intake, healthy eating etc was collected in addition to the wellbeing measure. This report focuses on the analysis of the data collected from 200 ‘armed forces community’ participants over five years. This reports analysis is carried out with the hypothesis that ‘Surf Action’s Surf Therapy provision and ‘Joined-Up Recovery Model’ has a positive and sustained effect on the wellbeing of participants’. The analysis looks for evidence which supports this and for evidence which supports the opposing null-hypothesis, namely that ‘Any positive effect in wellbeing as a result of participation can be attributed to other outside environmental/social factors’.