Close, James and Statton, Ryan and Martin, Imogen and Pinto, Crescenzo and Davies, Sara and Wheaton, Jamie and Airoldi, Mara and Conway, Mark and Dobson, Nathan and Quinti, David and Walsh, Colin and Browne, Matthew and Collard, Sharon (2026) The Gambling Harms Severity Index (GHSI): development of a holistic framework and measurement instruments for gambling related harms and recovery. London: National Centre for Social Research.