Policy changes have rendered the UK one of the most liberalised gambling markets globally. Concomitantly, gambling-related harms are receiving greater recognition. Gambling regulation is high on the public and political agenda, and the UK Government has committed to review the Gambling Act 2005. However, analysis of how gambling policy is formed, who is involved, how this process is influenced, and whose problem definition and solutions are adopted, and with what consequences, is lacking. The research aims to provide an analysis of emergent UK gambling policies using a mixed methods approach including stakeholder interviews, documentary analysis and case studies.