The Stakes of the Unwritten Constitutional Norms and Principles Debate in the UK

Unwritten principles serve crucial purposes in the UK’s constitution. For example, they provide guardrails for judicial interpretation of legislation, and they form or give rise to substantive rules about the limits of legislative, judicial and executive power. With a growing body of research on unwritten constitutionalism, it is worth considering why these issues matter, and what is at stake in the debate. This post considers two issues which it argues can only be properly understood once regard is paid to the unwritten principles and norms in the UK’s constitution: the limits of Westminster’s legislative power, and the nature of the UK’s territorial constitution.