This paper critically examines the intricate relationship between approaches to modern slavery and immigration policy in the UK, particularly in relation to migrants from Romania, Albania, and Ukraine. It situates the discussion within the broader context of state policies and practices that perpetuate exploitation, thereby challenging the notion that the UK has a ‘world-leading’ approach towards addressing modern slavery. The discussion highlights how immigration controls often intertwine with crime control, thereby facilitating a hostile environment for migrants. By drawing on examples from Romania, Albania, and Ukraine, the paper illustrates the varied and detrimental impacts of UK immigration and modern slavery policies on these groups. Furthermore, the paper explores public and political perceptions of immigration, noting fluctuations in attitudes post-EU withdrawal and across groups of migrants. The discussion extends to hinting at policy shifts under the new Labour government, addressing systemic challenges in addressing labour exploitation and reforming immigration. Ultimately, the paper calls for a nuanced approach that prioritises humanitarian and labour/employment considerations alongside security concerns, acknowledging the persistent complexities with modern slavery and immigration issues.