At a time of profound change and rethinking, this book provides insights into how environmental law in the UK has developed into its current form, and considers challenges it will face in the future. Irresolute Clay is not a legal history or textbook, nor a conventional set of legal memoirs. Instead it offers a personal account of the inside stories as experienced by one of the key architects of contemporary environmental law. Taking a thematic approach, it charts fundamental tenets of the subject (such as environmental sanctions, the European dimension, developing the academic discipline of environmental law, and environmental courts and tribunals), from the beginnings of the modern environmental law era in the 1970s to the present day.