Leigh was part of the Knowledge Manager for the Building Resilience and Adaptation to Climate Extremes and Disasters (BRACED) consortium, a £120m DFID-funded programme. Under BRACED, Leigh: co-authored a publication on the proliferation of armed smuggling networks in northern Niger; convened a series of global roundtables on the humanitarian implications of climate and conflict risk; and co-authored a series of literature scans on climate change, conflict and security.
He is part of the authorship team for publications on risk-informed development, a concept which encourages policy-makers and practitioners to consider the implications of multiple and intersecting threats and hazards. This included a case study focused specifically on policy targeting the smuggling economy in northern Niger.
He holds a Masters in Conflict, Security and Development from King’s College London, where he focused his studies on war economies, insurgency and the comparative study of civil wars.