Introduction
The doctrine of judicial precedent is a cornerstone of the English and Welsh legal system. Rooted in the common law tradition, it dictates that the legal principles established in past judicial decisions should be followed in subsequent cases with similar facts. This principle, often referred to by the Latin maxim stare decisis et non quieta movere (to stand by decisions and not disturb the undisturbed), ensures that the law is applied with consistency and predictability. While Parliament is the supreme law-making body in the UK, a significant portion of the law, particularly in areas like contract and tort, has been developed by judges through the system of precedent. This essay will discuss the doctrine of judicial precedent by explaining its core mechanics, including the hierarchy of the courts and the components of a legal judgment. It will then evaluate the methods by which judges can deviate from precedent, before concluding with a balanced consideration of the doctrine's main advantages and disadvantages.
The Mechanics of Judicial Precedent
For the doctrine of precedent to function effectively, a clear and rigid court structure is essential, as is a reliable system of law reporting. The basic principle is that a court is bound to follow the decisions of any court above it in the hierarchy, and appellate courts are generally bound by their own previous decisions.
The hierarchy of the courts in England and Wales is crucial to this process. At the apex is the Supreme Court, which replaced the Appellate Committee of the House of Lords in 2009. Its decisions are binding on all lower courts. The Supreme Court itself is not bound by its own past decisions. This freedom was formally established by the Lord Chancellor, Lord Gardiner, in the Practice Statement (Judicial Precedent) [1966] 1 WLR 1234. This statement acknowledged that while past decisions are normally binding, the House of Lords (and now the Supreme Court) could depart from a previous decision when it appeared right to do so. This power is used sparingly to allow the law to develop and to correct past errors, as seen in R v R (Marital Rape) [1991] 4 All ER 481, which overturned a centuries-old legal principle that a husband could not be guilty of raping his wife.
Below the Supreme Court is the Court of Appeal, which is divided into the Civil and Criminal Divisions. It is bound by the decisions of the Supreme Court. Furthermore, the Court of Appeal is generally bound by its own past decisions. However, in Young v Bristol Aeroplane Co Ltd [1944] KB 718, the court established three key exceptions to this rule. It is not bound if: (1) there are two conflicting decisions of its own, in which case it must decide which to follow; (2) its own previous decision has been implicitly overruled by a later decision of the House of Lords/Supreme Court; or (3) the previous decision was made per incuriam (through lack of care), meaning a relevant statute or precedent was not considered.
The High Court is bound by the decisions of the Supreme Court and the Court of Appeal. Its own decisions are binding on the lower courts (such as the County Court and Magistrates' Court) but are not binding on other High Court judges, although they are treated as highly persuasive. Finally, the decisions of the inferior courts (County Court and Magistrates' Court) do not create binding precedents.
Ratio Decidendi and Obiter Dicta
Not everything said in a judgment creates a binding precedent. It is essential to distinguish between the ratio decidendi and obiter dicta. The ratio decidendi (the reason for the decision) is the legal principle or rule upon which the court's decision is based. It is this part of the judgment that is binding on future courts. Identifying the ratio can be a complex task, as it is often entwined with the specific facts of the case and may not be explicitly stated by the judge. A classic example is the 'neighbour principle' articulated by Lord Atkin in Donoghue v Stevenson [1932] AC 562, which established the modern law of negligence. This principle, which holds that one must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your neighbour, formed the ratio of the case.
In contrast, obiter dicta (things said by the way) are other statements of law made by a judge in a judgment that are not essential to the final decision. These might include hypothetical scenarios or broader discussions of legal principles. While not binding, obiter statements, particularly those from senior judges in the Supreme Court, can be highly persuasive and may influence the development of the law in future cases. For example, in the same case of Donoghue v Stevenson, Lord Atkin’s comments on liability for other products besides ginger beer were obiter, but they heavily influenced subsequent product liability cases.
Flexibility within the Doctrine
While precedent provides rigidity and certainty, the common law has developed several mechanisms that allow judges a degree of flexibility, preventing the law from becoming completely static.
The most powerful tool is overruling, which occurs when a higher court decides that a legal principle laid down in a previous case is wrong and should no longer be followed. As mentioned, the Supreme Court can use the 1966 Practice Statement to overrule its own past decisions. For instance, in Pepper v Hart [1993] AC 593, the House of Lords overruled its previous decision in Davis v Johnson [1979] AC 264 to allow courts to refer to Parliamentary records in Hansard as an aid to statutory interpretation in limited circumstances.
A more common method used by judges at all levels is distinguishing. This occurs when a judge finds that the material facts of the case before them are sufficiently different from the facts of a previous case, so the precedent does not apply. This allows the judge to avoid following a precedent that would lead to an unjust or inappropriate outcome. This technique is a primary means by which the common law can adapt to new circumstances without formally overruling established principles. For example, in Balfour v Balfour [1919] 2 KB 571, it was held that a domestic agreement between a husband and wife was not a legally binding contract. However, this was distinguished in Merritt v Merritt [1970] 1 WLR 1211, where the agreement was made between a separated couple and was therefore considered to be legally enforceable.
Finally, reversing is a straightforward process where a higher court, on appeal, overturns the decision of the lower court in the same case. This does not affect the legal principle in question but simply changes the outcome for the parties involved.
An Evaluation of Judicial Precedent
The doctrine of judicial precedent has several clear advantages. Its primary benefit is providing certainty and predictability in the law (Slapper and Kelly, 2017). Litigants and their lawyers can assess the likely outcome of a case by looking at past decisions, which can discourage frivolous litigation and encourage settlements. This certainty is fundamental to the rule of law, ensuring that legal decisions are not arbitrary. Secondly, the doctrine promotes consistency and fairness by ensuring that similar cases are treated in a similar way. This principle of treating 'like cases alike' is a basic requirement of justice. Thirdly, the system is flexible, as the mechanisms of overruling and, more importantly, distinguishing, allow the law to evolve over time to meet changing social values and new technologies.
However, the doctrine is not without its disadvantages. A key criticism is its potential for rigidity. A bad or outdated precedent set by a high court may persist for many years if a suitable case does not reach a court with the power to overrule it. Lower courts are forced to follow these decisions even if they are considered unjust or unworkable. Another problem is the complexity and volume of case law. With thousands of judgments published each year, it can be difficult and time-consuming for lawyers and judges to find and interpret the relevant precedents, potentially leading to inconsistencies if a key case is missed. Furthermore, the law-making role of judges can be seen as undemocratic. Judges are not elected and are not accountable to the public in the same way as Parliament. When judges create or significantly alter a legal principle, they can be accused of judicial activism and usurping the legislative function. Finally, when a precedent is overruled, the new law applies retrospectively to the events that gave rise to the case, which can be seen as unfair to the party who acted in reliance on the old law.
Conclusion
In conclusion, the doctrine of judicial precedent is an indispensable element of the English legal system that provides a framework for consistent and predictable legal development. Through the strict hierarchy of the courts and the careful application of principles derived from the ratio decidendi of past cases, it ensures stability and fairness. While the system has inherent disadvantages, such as a degree of rigidity and the vast volume of case law, it is not an inflexible code. The tools of distinguishing and overruling provide a necessary capacity for evolution, allowing judges to adapt the law to contemporary needs and correct past errors. Despite criticisms regarding its undemocratic nature, the certainty and consistency fostered by judicial precedent are widely regarded as essential for maintaining the rule of law, and it remains a defining feature of the common law tradition.
References
- Slapper, G. and Kelly, D. (2017) The English Legal System. 18th edn. Routledge.
Cases
- Balfour v Balfour [1919] 2 KB 571
- Davis v Johnson [1979] AC 264
- Donoghue v Stevenson [1932] AC 562
- Merritt v Merritt [1970] 1 WLR 1211
- Pepper v Hart [1993] AC 593
- R v R (Marital Rape) [1991] 4 All ER 481
- Young v Bristol Aeroplane Co Ltd [1944] KB 718
Practice Directions
- Practice Statement (Judicial Precedent) [1966] 1 WLR 1234
