Exploring Conflict-Related Trauma and Problematic Substance Use within Post-Conflict Northern Ireland.

International research has identified a strong relationship between conflictrelated trauma (CRT) and problematic substance use (PSU) (e.g., Ezard et al., 2021). However, this evidence-base is dominated by biomedical, quantitative approaches primarily focusing on problematic alcohol use. To address the knowledge gap, this qualitative study will examine the relationship between CRT and wider PSU and the effectiveness of services targeting this issue within the unique post-conflict setting of Northern Ireland (NI) through a risk environment theoretical lens (Rhodes, 2002, 2008). Understanding this relationship is a key strategic and research priority to help support the implementation of the NI Substance Use and Mental Health strategies given increasing levels of PSU in NI, high CRT diagnoses and the unique post-conflict setting (DOH, 2021ab; NISRA, 2025abc). To provide in-depth understanding, the study will employ a qualitative research design with two data collections phases: focus groups with practitioners; and in-depth interviews with people experiencing CRT who use/d substances problematically. A reflexive thematic analysis will be conducted to discern patterns of meaning relevant to the research questions and risk environment theory. The unique collaboration with the strategically important Regional Trauma Network will facilitate engagement, knowledge and meaningful research impact. Findings will generate original theoretical and research insight into the relationship between CRT and PSU within a post-conflict setting. Results will help inform policy and practice on a local, national and international level. Findings will also contribute to wider research and theoretical understandings of this relationship within post-conflict societies through uniquely applying risk environment theory.