Introduction
The constitution of the United Kingdom allocates distinct but overlapping roles to its key institutions in the creation and development of law. Parliament, as the legislature, is traditionally seen as the primary source of new law, while the courts, the judiciary, are tasked with interpreting and applying that law. The question of which institution plays a more important role in shaping the content of law is a central debate in constitutional law. This essay will argue that while the courts have a significant and often creative role in shaping the law, particularly through the development of the common law and statutory interpretation, Parliament remains the supreme law-making authority. Therefore, this essay disagrees with the statement, concluding that Parliament's role is ultimately more important due to the foundational doctrine of parliamentary sovereignty.
The Supremacy of Parliament in Law-Making
The traditional cornerstone of the British constitution is the doctrine of parliamentary sovereignty. As famously articulated by A.V. Dicey, this doctrine holds three main principles: Parliament can make or unmake any law whatsoever; no Parliament can bind a future Parliament; and no body, including a court of law, can question the validity of an Act of Parliament (Dicey, 1915). This places statute law, created by Parliament, at the apex of the English legal system. Where a conflict arises between a judicially created principle (common law) and an Act of Parliament, the statute will always prevail.
Parliament's primary role gives it the power to create broad and detailed legal frameworks that govern entire areas of social and economic life. For example, the Equality Act 2010 consolidated numerous pieces of anti-discrimination legislation into a single, comprehensive statute, demonstrating Parliament’s ability to systematically shape and codify the law on a scale that the judiciary cannot match. The courts’ role, in this context, is to apply and interpret the framework that Parliament has created, not to create the framework itself.
Furthermore, Parliament possesses the ultimate power to reverse or alter the effect of judicial decisions. If the government and Parliament disagree with a court's interpretation of a statute or a development in the common law, they can pass new legislation to override it. A clear historical example is the War Damage Act 1965. This Act was passed to retrospectively nullify the House of Lords' decision in Burmah Oil Co v Lord Advocate [1965] AC 75, which had held that the government was liable to pay compensation for property destroyed during wartime. This demonstrates that, in any direct conflict, Parliament has the final word, reinforcing its superior role in determining the ultimate content of the law.
The Law-Shaping Role of the Judiciary
Despite the supremacy of Parliament, it is undeniable that the courts play a crucial role in shaping the law. This occurs primarily in two ways: the development of the common law and the interpretation of statutes.
First, large and fundamental areas of English law, such as the law of contract and the law of tort, are not codified in statute but have been developed over centuries by judges on a case-by-case basis. This system, known as the doctrine of precedent or stare decisis, means that judicial decisions create binding legal principles for future cases. The landmark case of Donoghue v Stevenson [1932] AC 562 is a classic example of judicial law-making. In this case, the House of Lords established the ‘neighbour principle’, which laid the foundation for the modern law of negligence. This was not an interpretation of a statute but a creative act by the judiciary to address a new social problem, demonstrating a powerful law-making capacity.
Second, judges shape the law through statutory interpretation. Acts of Parliament are often drafted in general terms and cannot foresee every possible scenario to which they might apply. It falls to the courts to determine the precise meaning of statutory wording. This interpretive function can have a profound effect on the law's content. For instance, in R v R (Marital Exemption) [1992] 1 AC 599, the House of Lords effectively abolished the centuries-old common law principle that a husband could not be criminally liable for raping his wife. The court interpreted the relevant sexual offences legislation in a way that reflected modern social values, effectively creating a new criminal liability where none had existed before. This shows the judiciary acting in a quasi-legislative capacity, updating the law where Parliament had failed to do so.
The Impact of the Human Rights Act 1998
The enactment of the Human Rights Act 1998 (HRA) has arguably granted the judiciary a more prominent role in shaping the law, leading some commentators to suggest a recalibration of the constitutional balance. The HRA requires UK courts to take into account the jurisprudence of the European Court of Human Rights and provides powerful interpretive tools.
Section 3 of the HRA is particularly significant, as it obliges courts to read and give effect to all legislation, "so far as it is possible to do so," in a way that is compatible with the rights protected in the European Convention on Human Rights (ECHR). This has led to courts adopting interpretations of statutes that their authors in Parliament likely never intended. In Ghaidan v Godin-Mendoza [2004] UKHL 30, the House of Lords used section 3 to interpret the Rent Act 1977, which gave inheritance rights to a surviving spouse living with the original tenant "as his or her wife or husband." The court read these words to include surviving same-sex partners, thereby extending significant legal protection. This was a radical interpretation that effectively updated the legislation, showcasing a significant power to shape the law's content.
However, the limits of judicial power are also embedded within the HRA. Where it is impossible to interpret a statute compatibly with a Convention right, section 4 allows a higher court to issue a 'declaration of incompatibility'. Crucially, such a declaration does not invalidate the Act of Parliament. It is a formal signal to Parliament that a law is in breach of human rights, but it is left to Parliament to decide whether to amend the law. For example, following the declaration of incompatibility in Bellinger v Bellinger [2003] UKHL 21 concerning the legal recognition of gender reassignment for the purposes of marriage, Parliament responded by passing the Gender Recognition Act 2004. This demonstrates that even in the human rights context, the courts' power is ultimately limited. They can identify a problem and prompt a change, but the ultimate decision to change the law rests with the sovereign Parliament.
Conclusion
In conclusion, the assertion that the courts play a more important role than Parliament in shaping the content of law is not convincing. While the judiciary's influence is substantial and should not be understated, its role is ultimately subordinate to that of Parliament. Judges have shaped entire doctrines through the common law and have given life and new meaning to statutes through interpretation, particularly under the Human Rights Act 1998. These are undeniably significant contributions to the content of English law.
However, the constitutional hierarchy remains clear. Parliament can legislate on any subject matter, its statutes override judge-made law, and it can explicitly reverse judicial decisions it dislikes. Even the powerful tools provided by the HRA 1998 do not displace parliamentary sovereignty, as the final say on amending incompatible legislation rests with Parliament. Therefore, the relationship is best understood not as a competition for dominance, but as a constitutional partnership in which Parliament holds the ultimate authority. The courts shape, refine, and apply the law, but Parliament determines its fundamental content and direction.
References
- Bellinger v Bellinger [2003] UKHL 21.
- Burmah Oil Co v Lord Advocate [1965] AC 75.
- Dicey, A.V. (1915) Introduction to the Study of the Law of the Constitution. 8th edn. London: Macmillan.
- Donoghue v Stevenson [1932] AC 562.
- Equality Act 2010.
- Gender Recognition Act 2004.
- Ghaidan v Godin-Mendoza [2004] UKHL 30.
- Human Rights Act 1998.
- R v R (Marital Exemption) [1992] 1 AC 599.
- War Damage Act 1965.
