J. G. Allen is a Senior Research Fellow at the Humboldt University in Berlin. He read law at the University of Tasmania, the Universität Augsburg, and the University of Cambridge. He has been an Australian Postgraduate Awardee, a DAAD Scholar, a Poynton Scholar, and an Alexander von Humboldt Foundation Postdoctoral Fellow.

• 1. Introduction; 2. Official action beyond statute; 3. The 'third source' in the courts; 4. A unified category of 'non-statutory executive powers'; 5. The crown as corporation; 6. Public law as the law of public offices; 7. Office in action; 8. Approaching judicial review; 9. Competence, conduct, and validity; 10. Moving beyond the ultra vires debate; 11. The common law theory of ultra vires; 12. The borders of the supervisory jurisdiction; 13. The normative foundations of judicial review.

J. G. Allen is a Senior Research Fellow at the Humboldt University in Berlin. He read law at the University of Tasmania, the Universität Augsburg, and the University of Cambridge. He has been an Australian Postgraduate Awardee, a DAAD Scholar, a Poynton Scholar, and an Alexander von Humboldt Foundation Postdoctoral Fellow.

• 1. Introduction; 2. Official action beyond statute; 3. The 'third source' in the courts; 4. A unified category of 'non-statutory executive powers'; 5. The crown as corporation; 6. Public law as the law of public offices; 7. Office in action; 8. Approaching judicial review; 9. Competence, conduct, and validity; 10. Moving beyond the ultra vires debate; 11. The common law theory of ultra vires; 12. The borders of the supervisory jurisdiction; 13. The normative foundations of judicial review.

J. G. Allen is a Senior Research Fellow at the Humboldt University in Berlin. He read law at the University of Tasmania, the Universität Augsburg, and the University of Cambridge. He has been an Australian Postgraduate Awardee, a DAAD Scholar, a Poynton Scholar, and an Alexander von Humboldt Foundation Postdoctoral Fellow.

• 1. Introduction; 2. Official action beyond statute; 3. The 'third source' in the courts; 4. A unified category of 'non-statutory executive powers'; 5. The crown as corporation; 6. Public law as the law of public offices; 7. Office in action; 8. Approaching judicial review; 9. Competence, conduct, and validity; 10. Moving beyond the ultra vires debate; 11. The common law theory of ultra vires; 12. The borders of the supervisory jurisdiction; 13. The normative foundations of judicial review.