Abstract: This report is a longitudinal analysis of the delivery, efficacy and effectiveness of Surf Action’s Armed Forces Community Families Resilient Children and Families Programme, which has been running for six years, and has been funded, in part by the National Lottery, Royal British Legion, Community Covenant and Armed Forces Covenant Funds. The programme is designed to help support service families through the emotional cycle of service life and deployment by using the proven physical and psychological health benefits of the blue and green gym concepts. By involving service and veteran families in surfing, surf lifesaving and other water-sports such as canoeing in the stunning coastal environment it helps knit families closer together and boost community cohesion. From the outset Surf Action, encourage parents/carers to join their children in the water and to experience the programme together because it is understood that spending quality time together as a group, and especially as a family, can have beneficial outcomes for everyone and especially children. The children completed the Warwick Edinburgh Mental Wellbeing Scale (WEMWBS), a positively worded measure developed by Warwick and Edinburgh Universities in 2006 in conjunction with NHS Scotland, measuring emotional and psychological wellbeing. This was done at the start (Baseline T1), in the middle, at the end of their 8-week course and 3 months after completion (Post Intervention T2). The parents/carers were engaged in directed conversations by Surf Action staff and volunteers both on the beach and in the water and, if any problems were highlighted, they could offer advice and help either informally or formally. Qualitative and quantitative data was gathered throughout each course. This report focuses on the analysis of the data collected from 374 ‘armed forces community’ children over six years for whom there was a complete data set. The analysis uses the hypothesis that ‘Surf Action’s Armed Forces Community Resilient Children and Families Programme has a positive and sustained effect on the wellbeing of the young people who participated’. The analysis looks for evidence which supports this and for evidence which might support the opposing null-hypothesis, namely that ‘Any positive effect on the wellbeing of the young people identified as a result of participation can be attributed to other outside environmental/social factors’. The evidence shown in the scatter-graphs, box and whisker diagrams, spiders web diagrams and tables justifies the rejection of the null hypothesis and ably demonstrates that the’ Surf Action Resilient Children and Families Programme’ has an identifiable and statistically significant effect on the physical and psychological wellbeing of the 374 young people who have participated.