Edward's research focuses on how public international law governs economic activities undertaken in foreign jurisdictions (international investment law) and in areas beyond state jurisdiction (e.g. deep seabed, outer space). His interests lie in how these regimes operate in the broader context of public international law. As a result, his research considers issues of fragmentation and regime interaction, primarily in relation to the intersection of international human rights law and international investment law. He also examines the interpretation of general principles sourced from public international law within these regimes. Finally, his research addresses the content of the law governing the exploitation of global commons, which is yet to be fully developed.

Edward is willing to supervise PhD researchers in the fields of international investment law and the law relating to the exploitation of global commons.