This book investigates and analyses how administrative law works in practice through a detailed case-study and evaluation of one of the UK’s largest and most important administrative agencies, the immigration department. In doing so, the book broadens the conversation of administrative law beyond the courts to include how administrative agencies themselves make, apply, and enforce the law. Blending theoretical and empirical administrative-legal analysis, the book demonstrates why we need to pay closer attention to what government agencies actually do, how they do it, how they are organised,...