‘A Practical Guide to United Kingdom Parliamentary Privilege in Judicial Review Proceedings’ by Sam Fowles

£69.99

Paperback: 978-1-918241-24-2
Published: April 2026

Description

Questions of parliamentary privilege arise throughout judicial review. Any lawyer required to grapple with the meaning of the statute must also consider the implications of privilege (which may determine whether they can rely on parliamentary material to assist them in understanding the statute). Privilege has played a determinative role in matters concerning human rights, devolution, constitutional law, and even criminal prosecution (to name but a few). It is surprising, therefore, that there has hitherto been no attempt at a comprehensive account. This book aims to fill that lacuna.

The book also turns a critical eye on privilege, exposing the contradictions inherent in justifications for privilege, the legal and political fictions on which it is based, and arguing that it often operates to frustrate or render otiose key elements of the constitution including the separation of powers and the democratic mandate. Privilege is distinct in modern jurisprudence in that, more than other legal concepts, judges tend to reason from first principles. This book equips the practitioner to engage with the jurisprudence at this level, while also providing a detailed account of the relevant authorities. It is, for this reason, intended to be useful to both practitioners and academics, providing the former with the tools they need to grapple with such arguments in advice and litigation and the latter with both theoretical and practical insights into an under-analysed but vital aspect of public law.

Chapter 1 covers the origins and theoretical and constitutional basis for privilege. Chapter 2 provides a comprehensive account of the use of parliamentary material in judicial review. Chapter 3 addresses the limits of privilege, exploring when decisions in and around parliament can and cannot be challenged. Chapter 4 examines some critiques of privilege and suggests how the concept may evolve in future.

The book draws on the author’s personal experience of arguing privilege cases, including the leading Supreme Court authority (Miller v The Prime Minister [2020] AC 373) and before the Committee on Privileges.

ABOUT THE AUTHOR

Sam Fowles is a barrister specialising in judicial review. His practice includes constitutional law, judicial review, human rights planning and environment, information law, inquests, public inquiries, and public international law. He accepts instructions from government and claimants at all levels, including NGOs, companies, public bodies, individuals, and local government.

Sam is regularly instructed in complex and high-profile matters and has appeared in many of the leading public law cases in recent years. These include Miller v The Prime Minister, Hamilton v The Post Office, and the Parliamentary Inquiry into the policing of the Clapham Common vigil for Sarah Everard. He regularly appears unled or as part of a team in the higher courts. He is experienced at every level of tribunal up to and including the Supreme Court.

Sam is a Visiting Senior Fellow at the Centre for British Democracy (Kings College London) (2025), where he conducts research which draws on, complements, and develops his public law and public international law practice.

CONTENTS

Chapter One – What Is Privilege?
– Elements of Privilege
– Historical Roots
– Constitutional Role
– Scope
– Privilege in the Devolved Legislatures
– Procedure

Chapter Two – Reliance on Parliamentary Material
– The Exclusionary Rule
– The Papers Exception
– The Ministerial Statement (Pepper v Hart) Exception
– The Evidence of Facts Exemption
– The Ministerial Decisions Exception
– The Human Rights Exception

Chapter Three – Questioning or Impeaching Proceedings in Parliament
– When is a Proceeding in Parliament not a Proceeding in Parliament?
– When is an Act not an Act?
– Human Rights
– Exclusive Cognisance
– Commissioners and Ombudsmen
– Introducing Proposals to Parliament

Chapter Four – Conclusion – A Reassessment of Privilege
– Is Privilege Democratic?
– Uncertainty
– A Privilege of the Legislature or the Executive
– Executive over the Legislature
– One-Way Comity
– The Separation of Powers/Parliament’s Constitutional Role
– Alternative Models