KEY FINDINGS FROM OUR INQUIRYThe evidence heard points to an urgent need for systemic reform, combining strong public-health leadership, integrated governance, and adequately resourced services.Substance misuse remains a systemic challenge across the prison estate, affecting safety, health outcomes and rehabilitation prospects.The Committee found clear evidence that drug use in custody is closely linked to mental-health service inadequacy, social disadvantage and lack of purpose.Enforcement alone cannot address these issues; a whole-system, public-health approach is required, underpinned by equal access to treatment and recovery services.The current variation in healthcare provision between NHS Boards undermines consistency of care and outcomes.Workforce pressures, overcrowding and resource constraints exacerbate risk and hinder implementation of best...