A major cause of the ethical issues raised by biofuels production is not the technologies themselves but rather the policies that led to their extremely rapid adoption. In this chapter, we consider how the interaction of policy, technology and their practical implementation can be filtered through the Ethical Principles..., supporting the development of a more ethical biofuels system...[W]e test existing biofuels policies against our Ethical Principles and develop recommendations as to how they could be improved.