This textbook provides a thorough and accessible introduction to the basic principles of United Kingdom Public Law; including Human Rights law. By taking the reader through the key constitutional structures – from what it means to study Public Law and the inherent challenges and tensions therein, to the more specific structures like the judiciary and executive. This book is therefore an essential starting point for more advanced law students and a valuable source of legal context for political science students alike. Both authoritative and accessible, it enables the reader to appreciate the complexity and beauty of this most fundamental part of our legal system.