International non-governmental organisations (NGOs) delivering aid are expected, by the public and government institutions funding them to focus upon maximising effectiveness for the delivery of aid and in the process, adopt ethical procurement practices. In this book our aim is to improve ethical procurement in humanitarian supply chains. To do so we formulate ethical procurement strategies for NGOs by developing a conceptual framework for collaborative ethical procurement due diligence. At the tactical level we identify inhibitors and enablers to collaboration between NGOs, their suppliers' networks, and donors. At the operational level we develop a risk-rating framework. This framework provides NGOs with the tools to establish a collaborative procurement code of conduct ethics system. This system can be used to assess ethical risks in humanitarian supply chains (HSC's). The book is targeted at charitable, public and commercial organisations seeking to improve their ethical procurement practices.