Introduction
The doctrine of judicial precedent is a cornerstone of the English legal system. As a common law jurisdiction, a significant portion of the law in England and Wales is found in the judgments of senior courts. The doctrine, often expressed through the Latin maxim stare decisis (to stand by things decided), ensures that the law is applied consistently and predictably. It requires that courts follow the legal principles established in previous cases, particularly those decided by courts of a higher or equivalent level. This essay will explain the operation of judicial precedent by examining the hierarchy of the courts, the essential components of a judicial decision, and the mechanisms that provide the system with necessary flexibility.
The Court Hierarchy and Binding Precedent
The operation of judicial precedent is dependent on the hierarchical structure of the court system. The basic rule is that a court is bound to follow the decisions of any court above it in the hierarchy. Furthermore, appellate courts are generally bound by their own past decisions, a principle known as horizontal stare decisis.
At the apex of the hierarchy is the Supreme Court. Its decisions are binding on all lower courts. For a long time, the House of Lords (the predecessor to the Supreme Court) was also bound by its own previous decisions. However, this rigid approach was changed by the Lord Chancellor's Practice Statement (Judicial Precedent) [1966] 1 WLR 1234. This statement declared that while former decisions would normally be treated as 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 prevent uncertainty in the law, but it allows the highest court to correct past errors or adapt the law to changing social conditions (Slapper and Kelly, 2017). A notable use of this power was in R v G [2003] UKHL 50, which overruled the earlier decision on criminal recklessness in R v Caldwell [1982] AC 341.
Below the Supreme Court, the Court of Appeal is bound by decisions of the Supreme Court. It is also generally bound by its own past decisions. The exceptions to this rule were established in Young v Bristol Aeroplane Co Ltd [1944] KB 718. The Court of Appeal is not bound by its own past decisions where: (1) there are two conflicting decisions of its own; (2) its own previous decision has been implicitly overruled by the Supreme Court; or (3) the previous decision was made per incuriam (through want of care or mistake).
Ratio Decidendi and Obiter Dicta
To understand what part of a judgment is binding, it is necessary to distinguish between the ratio decidendi and obiter dicta. The ratio decidendi, or ‘reason for the decision’, is the legal principle or rule upon which the court’s decision is founded. It is this part of the judgment that forms the binding precedent for future cases with similar material facts. Identifying the ratio can be difficult, as judges do not always explicitly state it.
In contrast, obiter dicta means ‘other things said by the way’. These are comments or observations made by a judge that are not strictly necessary for the decision in the case. For example, a judge might speculate on what the decision would have been if the facts had been different. While obiter dicta are not binding on future courts, they can be of persuasive authority, especially if made by a senior judge in the Supreme Court (Gillespie, 2019). The famous 'neighbour principle' from Donoghue v Stevenson [1932] AC 562 is often cited as an example of a foundational ratio, establishing the modern law of negligence.
Mechanisms for Flexibility
While the doctrine of precedent promotes certainty, a strict and rigid application could lead to injustice and prevent the law from developing. Therefore, judges have several tools to avoid following a precedent that would lead to an undesirable outcome. The most important of these is distinguishing. If a judge can find that the material facts of the case before them are sufficiently different from the facts of the precedent case, they are not bound to follow it. This allows judges to limit the application of a particular ratio to its specific facts.
Another mechanism is overruling, where a higher court declares that a legal decision in a previous case was wrong and is no longer to be followed. As noted, this is most significantly available to the Supreme Court in respect of its own previous decisions. This ensures that errors in the law do not become permanently entrenched.
Conclusion
In conclusion, the doctrine of judicial precedent is fundamental to the operation of the common law in England and Wales. It provides certainty and consistency by requiring courts to follow the legal principles laid down by higher courts. The system is structured around the court hierarchy and the binding element of a judgment known as the ratio decidendi. However, the doctrine is not entirely inflexible. The ability of the Supreme Court to depart from its own decisions, and the judicial techniques of distinguishing and overruling, ensure that the common law can adapt over time to meet the changing needs of society while maintaining a core of legal predictability.
References
Gillespie, A. (2019) The English Legal System. 7th edn. Oxford: Oxford University Press.
Slapper, G. and Kelly, D. (2017) The English Legal System. 18th edn. Abingdon: Routledge.
Donoghue v Stevenson [1932] AC 562.
Practice Statement (Judicial Precedent) [1966] 1 WLR 1234.
R v Caldwell [1982] AC 341.
R v G [2003] UKHL 50.
Young v Bristol Aeroplane Co Ltd [1944] KB 718.
