This review of the role of business in tackling modern slavery in supply chains focuses on academic literature, though some reports by development organisations are included. Since the available academic literature is extremely limited (see point below), the report is not presented as a conventional evidence review, but rather is organised by aspects of the theme: prevalence of modern slavery in supply chains, pressures on firms to tackle this, challenges in doing so and different approaches, and evidence from initiatives to date. For each aspect, the main points made in the literature are given.