Certification schemes and labels such as the Forest Stewardship Council, Fairtrade, and Rainforest Alliance are market-based mechanisms designed to harness consumer power in economically developed countries to influence companies to improve the economic, social and environmental welfare of producers, workers and communities in economically developing countries. However, consumers are largely not convinced that certification schemes are acting in the interests of developing countries, because consumers have different understandings of the ethics of global trade. Drawing on the results of six semi-structured (...) focus groups comprising 58 consumers and an online panel-based survey of 1014 respondents, this study tests the central assumption underlying these schemes that consumers are motivated to hold companies responsible for unethical behaviour. Most consumers hold sceptical, and at times, conflicting views in terms of how they perceive the root causes of the problems, possible solutions and ethical trade beneficiaries. This study contributes to the nascent literature on political consumerism, by highlighting an under-theorised and contradictory challenge for certification schemes. Political consumers are required to recognise the complexities of ethical trade while believing that the simple act of purchasing their labelled products is effective. Consumers also envisage a role for government regulation. (shrink)