This paper explores the impact of the United Kingdom leaving the European Union (Brexit) on workers’ vulnerability to labour exploitation. Combining desk-based research and interviews with members of the Labour Exploitation Advisory Group (LEAG), this paper sets out how migrant worker vulnerability to exploitation has been affected by the UK referendum vote to leave the European Union. It looks both at the immediate impact of that decision and considers the key risk areas for the future as the UK transitions out of the EU.