Albert Venn Dicey was a prominent 19th-century constitutional lawyer whose work, An Introduction to the Study of the Law of the Constitution (1885), provided a highly influential definition of the Rule of Law. This principle is a cornerstone of the UK's unwritten constitution, asserting that a nation must be governed by established laws rather than the arbitrary power of individuals. Dicey's theory, while foundational, was a product of his time and has been subject to considerable debate and development. This discussion will outline Dicey’s three core elements of the Rule of Law before evaluating them in light of modern legal and theoretical challenges, culminating in an assessment of the principle’s contemporary status, including its recognition in statute.
Dicey’s first element posits that no person can be punished or made to suffer in body or property except for a distinct breach of law established in the ordinary legal manner before the ordinary courts. This principle stands in direct opposition to arbitrary or discretionary power. It means that the government cannot inflict punishment on a whim; there must be a pre-existing law that has been broken and this must be proven through a proper legal process. The classic case of Entick v Carrington (1765) embodies this idea, where it was ruled that state officials could not act without clear legal authority, rendering a general warrant to seize private papers unlawful. This ensures that executive action remains within its legal boundaries.
The second element of Dicey’s formulation is equality before the law. He argued that all individuals, regardless of their rank or position, including government officials, are subject to the same law and are accountable in the same courts. This contrasts with systems, such as that in France at the time, which had separate administrative courts for cases involving the state. In the UK, although the monarch retains personal immunity, the Crown Proceedings Act 1947 significantly reduced the state's immunity by allowing citizens to sue government departments for wrongs committed. The case of M v Home Office (1994) strongly affirmed this principle, where the House of Lords held that the Home Secretary could be found in contempt of court, demonstrating that even senior ministers are not above the law.
Dicey’s third element states that the general principles of the constitution, such as the rights to liberty and public assembly, are the result of judicial decisions in specific cases brought by private individuals. He believed that rights were better protected by the common law judgments of an independent judiciary than by formal declarations in a written constitution, which he viewed as potentially abstract and easily ignored. This "bottom-up" approach sees fundamental rights as embedded within the ordinary law of the land. However, this view has been partly superseded by the enactment of the Human Rights Act 1998, which incorporated rights from a specific code, the European Convention on Human Rights, directly into UK law.
Despite its influence, Dicey's 19th-century perspective has been criticised as outdated and incomplete. The academic Sir Ivor Jennings argued that Dicey’s hostility towards discretionary power was unrealistic, as the modern welfare state depends on government agencies having the discretion to provide services like healthcare and social security. Furthermore, Dicey’s concept of absolute equality is an oversimplification. Certain officials, such as judges, police officers, and Members of Parliament, possess special powers, immunities, or privileges necessary for the performance of their duties. His emphasis on common law rights also underplays the role of Parliament, which, under the doctrine of parliamentary sovereignty, can create or abolish rights by statute.
Later theorists have developed more modern interpretations of the Rule of Law. The economist and philosopher F.A. Hayek supported a 'formal' or 'thin' conception, similar to Dicey, which prioritises legal certainty and predictability. For Hayek, the law should act as a clear set of rules, enabling individuals to plan their affairs with confidence that they will not be frustrated by arbitrary government action. By contrast, Joseph Raz, while also a formalist, provided a more nuanced view. He argued that the Rule of Law's purpose is to make law an effective guide for behaviour, meaning laws should be prospective, clear, and stable. However, Raz importantly distinguished the Rule of Law from concepts like democracy or justice, noting that a state could comply with the Rule of Law and still have oppressive laws.
The significance of the Rule of Law in the modern UK constitution was formally affirmed by Parliament in the Constitutional Reform Act 2005. Section 1 of the Act explicitly states that the Act does not adversely affect "the existing constitutional principle of the rule of law." While this provision is symbolic and does not offer a definition, it gives the principle statutory authority and signals its fundamental importance. The judiciary has since used this principle to scrutinise executive and legislative action. For instance, in R (on the application of Unison) v Lord Chancellor (2017), the Supreme Court held that high employment tribunal fees were unlawful because they impeded access to justice, which they identified as a core component of the Rule of Law. This demonstrates that the principle is not merely a political theory but a practical legal tool used to hold power to account. In conclusion, while Dicey's original formulation has its limitations, its core tenets against arbitrary power and for legal equality remain central. The Rule of Law has evolved into a dynamic and fundamental constitutional principle, acknowledged by Parliament and enforced by the courts.
References
Dicey, A. V. (1885) An Introduction to the Study of the Law of the Constitution. London: Macmillan.
Constitutional Reform Act 2005, c. 4.
Crown Proceedings Act 1947, c. 44.
Entick v Carrington (1765) 19 Howell's State Trials 1030.
Human Rights Act 1998, c. 42.
M v Home Office [1994] 1 AC 377.
R (on the application of Unison) v Lord Chancellor [2017] UKSC 51.
