Around the world, the role of national regulation is often hotly debated. This book takes as its starting point the fact that legislatures and regulators are criticized for overregulation and for producing poor-quality regulation which ignores input from citizens and stifles private initiative. This situation has enhanced the role of non-state law, in forms such as self-regulation and soft law. In this book, international scholars in various fields of law, as well as socio-legal studies, address the question to what extent non-state law currently influences state regulation, and what the consequences of non-state law are likely to be for state regulation. Drawing lessons for the state legislature and state regulators, this innovative book will be of great interest to academic researchers and post graduate students in the fields of law, regulation, legal sociology, legal theory, law and economics, and environmental law. It will also be of interest to policy makers and regulators - those working at ministries and government departments drafting legislation.