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Judicial Precedent
Year 1 / ASYear 2 / A-LevelAQA, OCR, WJEC/Eduqas
A* revision on judicial precedent for AQA 7162 and OCR H418: stare decisis, ratio and obiter, the Practice Statement 1966 (Conway v Rimmer, Herrington, R v Shivpuri), the Young v Bristol Aeroplane exceptions, distinguishing (Balfour v Merritt) and persuasive precedent (Holley; R v James/Karimi) — with full 10- and 20-mark model answers.
🎯 Learning Objectives
Explain stare decisis and the hierarchy of the courts, and identify ratio decidendi and obiter dicta in judgments, with the reasons for law reporting (AQA 3.1.5; OCR H418 Component 3, Section A)
Explain the operation of the Practice Statement 1966 with authority — Conway v Rimmer (1968), Herrington v British Railways Board (1972), Miliangos (1976), R v Shivpuri (1986) (AO1/AO2)
State and apply the three exceptions in Young v Bristol Aeroplane (1944), including per incuriam (Williams v Fawcett; Rickard v Rickard), and explain the Criminal Division's greater flexibility (R v Taylor; R v R) (AO1/AO2)
Distinguish overruling, reversing and distinguishing, using Balfour v Balfour and Merritt v Merritt (AO1/AO2)
Explain the sources of persuasive precedent, including Privy Council decisions — Holley (2005) and its treatment in R v James; R v Karimi (2006) (AO1/AO2)
Evaluate the doctrine: certainty against flexibility and justice, and the role of law reporting (AO2/AO3)
📋 Key Definitions and Core Concepts
Stare decisis: 'To stand by what has been decided' — the doctrine that like cases are treated alike: a precedent set by a superior court binds lower courts in later cases on the same material facts.
Ratio decidendi: The legal reason for the decision on the material facts — the only part of a judgment that creates binding precedent.
Obiter dicta: 'Things said by the way' — other statements, hypotheses and remarks in a judgment; persuasive only, not binding.
Binding precedent: A precedent a court must follow — created by the ratio of a superior court in the hierarchy (e.g. the Supreme Court binding the Court of Appeal).
Persuasive precedent: A precedent a court may follow but is not compelled to — obiter dicta of superior courts, dissenting judgments, decisions of lower courts, Commonwealth and Privy Council decisions.
Original precedent: A precedent created when a court faces a point of law with no previous decision — the judgment becomes the authority for the future (Donoghue v Stevenson (1932)).
Practice Statement 1966: The House of Lords' (now the Supreme Court's) declaration that its former decisions 'may be departed from when it appears right to do so', while respecting certainty in contract, property, fiscal and criminal matters.
Per incuriam: 'Through lack of care' — a decision given in ignorance of a relevant statute or binding precedent; such decisions do not bind (Williams v Fawcett (1986)).
Overruling: A court — usually a higher one — departs from a precedent in a different case, so it is no longer binding (R v Shivpuri (1986) overruling Anderton v Ryan (1985)).
Reversing: A higher court changes the decision of a lower court in the same case on appeal (e.g. the House of Lords reversing the Court of Appeal in R v R (1991)).
Distinguishing: Finding a material difference of fact between the precedent and the present case, so the precedent does not apply (Merritt v Merritt (1976) distinguishing Balfour v Balfour (1919)).
Incorporated Council of Law Reporting: Founded 1865 to produce accurate, authoritative, barrister-edited law reports — essential to precedent because judges can only follow decisions they can read with confidence.
📌 Key Points
Hierarchy: Supreme Court binds all; Court of Appeal binds lower courts and generally itself (Young v Bristol Aeroplane 1944); High Court binds the courts below; Crown, county and magistrates' courts create no precedent.
Ratio decidendi binds; obiter dicta persuade — the neighbour principle in Donoghue v Stevenson was applied as ratio by later decisions.
Practice Statement 1966: the Supreme Court may depart from its own decisions 'when it appears right' — Conway v Rimmer (1968), Herrington (1972), Miliangos (1976), R v Shivpuri (1986, first criminal use).
Young v Bristol Aeroplane exceptions: conflicting Court of Appeal decisions; decision overruled by the Supreme Court; per incuriam (Williams v Fawcett).
Criminal Division flexibility: R v Taylor (1950), R v Gould (1968), R v Magro (2000); R v R (1991) declared the marital rape exemption obsolete.
Avoiding precedent: distinguishing (Balfour v Balfour / Merritt v Merritt); persuasive precedent includes the Privy Council — Holley (2005) treated as binding in R v James; R v Karimi (2006).
Stare decisis, the court hierarchy and the parts of a judgment (AQA 3.1.5; OCR H418 Component 3, Section A)
The doctrine of judicial precedent — stare decisis ('to stand by what has been decided') — means like cases are treated alike: a precedent set by a superior court binds inferior courts in later cases on the same material facts. It works because of three conditions: the hierarchy of the courts, accurate law reports, and the reasoning a senior court must give.
Supreme Court (formerly the House of Lords): binds every court below; it can depart from its own previous decisions under the Practice Statement 1966.
Court of Appeal (Civil and Criminal Divisions): binds all lower courts and, under Young v Bristol Aeroplane (1944), generally binds itself.
Divisional courts (King's Bench, Family, Chancery): bound like the Court of Appeal, with similar exceptions.
High Court: binds the county, crown and magistrates' courts; a single High Court judge's decision does not bind other High Court judges, though it is usually followed.
Crown, county and magistrates' courts: create no precedent for other courts.
Ratio and obiter. Only the ratio decidendi — the legal reason for the decision on the material facts — binds; obiter dicta ('things said by the way') are persuasive only. Identifying the ratio is the core skill: in Donoghue v Stevenson (1932) the majority decided on the neighbour principle; some later judges treated that principle as the ratio (Grant v Australian Knitting Mills (1936)), others as obiter (Rondel v Worsley (1967)) — but because the House of Lords and Privy Council applied it in later cases, it binds today either way. Obiter can still matter: in R v Gotts (1992) the Court of Appeal followed the House of Lords' obiter statement (R v Howe (1987)) that duress is no defence to attempted murder.
Law reporting. Precedent depends on accurate reports: before 1865 reports were private, unreliable and inconsistent, so courts could not safely follow them. The Incorporated Council of Law Reporting (1865) produced accurate, authoritative reports edited by barristers — which is why the growth of precedent is tied to law reporting: judges can only follow decisions they can read with confidence.
The Practice Statement 1966 and the Supreme Court
From London Street Tramways Co Ltd v London County Council (1898) the House of Lords bound itself — certainty above everything, so that even a wrong decision stood until Parliament intervened. By the 1960s that rigidity was criticised. The Practice Statement (Judicial Precedent) 1966 announced that former decisions of the House 'may be departed from when it appears right to do so', while bearing in mind the special importance of certainty in contract, property and fiscal arrangements and in criminal law.
How it has been used:
Conway v Rimmer (1968) — first use, on a minor point: overruled Duncan v Cammell Laird (1942) on Crown privilege, allowing disclosure of official documents to be contested in evidence.
Herrington v British Railways Board (1972) — overruled Addie v Dumbreck (1929): an occupier now owed some duty of care to child trespassers; the change led to the Occupiers' Liability Act 1984.
Miliangos v George Frank (Textiles) Ltd (1976) — overruled Havana Railways (1961): judgments could be given in foreign currency, recognising sterling's instability.
R v Shivpuri (1986) — first use in criminal law: overruled Anderton v Ryan (1985) on attempted crimes of impossibility under the Criminal Attempts Act 1981, barely a year later. Lord Bridge welcomed the use of the Statement, describing it as abandoning any pretence that the House was infallible.
Knauer v Ministry of Justice (2016) — the Supreme Court continues the practice: overruled Cookson v Knowles (1979) so that multipliers in fatal-accident damages run to the date of trial; Jogee (2016) similarly reinterpreted joint enterprise liability.
Exam analysis: the Statement balances certainty against justice. It is used sparingly — the criminal-law caution is real (Shivpuri itself took courage, reversing course within a year) — but the Supreme Court will act where a previous decision was plainly wrong or Parliament has not acted. Note the interplay with statute: Herrington's change was codified by the Occupiers' Liability Act 1984, and Shivpuri interpreted a modern Act rather than the old common law.
Young v Bristol Aeroplane (1944) and the Court of Appeal
The Court of Appeal is bound by decisions of the Supreme Court and, generally, by its own previous decisions. Young v Bristol Aeroplane Co Ltd (1944) stated three exceptions:
Conflicting decisions — where there are two conflicting Court of Appeal decisions, the court chooses which to follow (Tiverton Estates v Wearwell (1974));
Overruled by a higher court — where a decision has been overruled expressly or by implication by the House of Lords (now the Supreme Court), the court must follow the later superior decision;
Per incuriam — where the decision was given in ignorance of a relevant statute or binding authority (Williams v Fawcett (1986), where an earlier decision rested on a misreading of court forms; Rickard v Rickard (1990)).
Davis v Johnson (1979) shows the limits: the Court of Appeal — Lord Denning MR arguing the court should be free to correct its own errors — refused to depart from its own decision given days earlier, and the House of Lords affirmed that Young still governs. The per incuriam exception is narrow: a decision made without considering a relevant statute or binding authority is not binding, but the court will not strain to find it (Rickard v Rickard).
The Criminal Division is more flexible: it will depart from its own decisions where satisfied the law was misapplied or misunderstood — R v Taylor (1950), R v Gould (1968) — though R v Spencer [No 2] (1985) shows the limits, and R v Magro (2000) used the per incuriam exception. R v R (1991) is the classic example: the Court of Appeal (Lord Lane CJ) held the husband's marital rape exemption was a common-law fiction that no longer reflected the law — a Practice-Statement-style departure in criminal law — and the House of Lords affirmed, abolishing the immunity outright. The Criminal Division's flexibility exists because justice in criminal cases outweighs certainty: an accused should not be convicted under a rule the court knows to be wrong.
Avoiding and applying precedent: overruling, reversing, distinguishing and persuasive precedent
Courts apply precedent by following it. They avoid it by:
Reversing — a higher court changes the decision of a lower court in the same case on appeal (the House of Lords reversing the Court of Appeal in R v R (1991));
Overruling — a court, usually a higher one, departs from a precedent in a different case, so it is no longer binding (R v Shivpuri (1986) overruling Anderton v Ryan (1985));
Distinguishing — the judge finds a material difference of fact between the precedent and the present case, so the precedent does not apply.
Distinguishing in action — Balfour v Balfour (1919) and Merritt v Merritt (1976). In Balfour the House of Lords held that a domestic agreement between a husband and wife living amicably together is not intended to create legal relations, so it cannot be a contract. In Merritt v Merritt (1976) the couple were already separated, and the agreement over the matrimonial home was made in writing after separation — material differences meant Balfour did not apply, and the agreement was enforceable. (Note: candidates routinely call this pair 'Balfour v Merritt' — they are two separate cases, and the skill is explaining how Merritt distinguished Balfour.)
Persuasive precedent — not binding, but a court may choose to follow it:
Obiter dicta of higher courts (R v Gotts (1992) — duress no defence to attempted murder);
Dissenting judgments, occasionally adopted later;
Decisions of lower courts, usually followed for consistency though not compelled;
Decisions of foreign and Commonwealth courts, including the Privy Council;
Since the Human Rights Act 1998, European Court of Human Rights judgments, which courts must take account of (s.2).
Privy Council — R v Holley (2005). Privy Council decisions normally only persuade, but Holley — a Jersey murder appeal heard by a nine-member panel including a majority of Lords of Appeal in Ordinary — held that the 'ordinary reasonable person' in the provocation defence shares the accused's age and sex, expressly departing from R v Smith (Morgan) (2000), where the House of Lords majority had allowed the ordinary person to share all characteristics relevant to the provocation. The Court of Appeal was left with conflicting authorities: in R v James; R v Karimi (2006) it held that Holley should be followed — effectively overruling Smith (Morgan) — because the Holley panel was constituted to settle English law. A* point: James/Karimi shows the Court of Appeal using Practice-Statement-style reasoning to resolve a conflict between a Privy Council decision and existing precedent.
Evaluation: certainty versus flexibility
Advantages:
Certainty and predictability — like cases decided alike; businesses and citizens can plan (the reason London Street Tramways (1898) bound the House of Lords for nearly 70 years);
Consistency and fairness — similar cases produce similar outcomes, supporting the rule of law's demands for equality before the law and clarity;
Efficiency — settled points are not reargued, so cases are disposed of faster and more cheaply;
Incremental development — the law grows case by case in response to real facts (Donoghue; Herrington), often ahead of Parliament.
Disadvantages:
Rigidity — a bad decision binds until overruled; overruling needs a higher court or Parliament, and appeals are slow and expensive;
Uncertainty — the Practice Statement and distinguishing make outcomes less predictable, and judges deciding when it 'appears right' to depart are arguably law-making;
Complexity — ratio decidendi can be hard to extract from judgments, the volume of reports is vast, and distinguishing can shade into artificial hair-splitting;
Obsolete rules persist — immunities and fictions survive until a court is willing to strike them down (it took until 1991 to abolish the marital rape exemption in R v R).
The balance. The system is a designed compromise: the Practice Statement (1966) lets the Supreme Court correct itself sparingly; Young's exceptions and the Criminal Division's flexibility let the Court of Appeal escape its own errors; distinguishing fits old rules to new facts; and the Law Commission recommends codification where precedent has become unworkable. A* judgement: certainty is protected where it matters most — contracts, property, fiscal arrangements and crime, per the Practice Statement's own caution — while flexibility operates where injustice would otherwise persist. The balance is broadly right, but it depends on judicial willingness to use the tools: Shivpuri shows the courts will act decisively when a decision is plainly wrong, and Herrington and R v R show precedent changing the law faster than Parliament.
💡 Worked Example
Exam-style: Explain, using the Practice Statement 1966 and one case, how the House of Lords/Supreme Court can depart from its own previous decisions. [AQA Paper 1, 10 marks] | 'The doctrine of judicial precedent strikes the right balance between certainty and flexibility.' Evaluate this statement. [OCR H418 Component 3, 20 marks]
Mark-scheme logic: Mark-scheme logic for a top-band answer. AO1: accurate statement of the doctrine (stare decisis, ratio decidendi, obiter dicta, the hierarchy including the Supreme Court) and of the avoidance mechanisms — the Practice Statement 1966 ('departed from when it appears right to do so'), the Young v Bristol Aeroplane (1944) exceptions (conflicting decisions; overruled by a superior court; per incuriam), reversing and distinguishing. AO2: application with named authority — Conway v Rimmer (1968) overruling Duncan v Cammell Laird (1942); Herrington (1972) overruling Addie v Dumbreck (1929); Miliangos (1976); R v Shivpuri (1986) overruling Anderton v Ryan as the first criminal use; Williams v Fawcett (1986) on per incuriam; Merritt v Merritt (1976) distinguishing Balfour v Balfour (1919); Holley (2005) followed in R v James; R v Karimi (2006); R v R (1991). AO3 for the evaluation: weigh certainty (like cases alike; planning; rule of law) against flexibility (justice; outdated rules — R v R; cost of appeals); reach a justified conclusion, e.g. the balance is broadly right because the Practice Statement is used sparingly and the Young exceptions are narrow, but the system depends on judicial willingness to depart — Shivpuri and Herrington show the courts will act when a decision is plainly wrong.
❓ Practice Questions & Mark Schemes
Explain the exceptions in Young v Bristol Aeroplane Co Ltd (1944) and evaluate their effect. Refer to Williams v Fawcett. [OCR H418 Component 3, 10 marks]
Answer: The Court of Appeal is bound by its own previous decisions, subject to three exceptions. One: where there are conflicting decisions, the court chooses which to follow (Tiverton Estates v Wearwell (1974)). Two: where a decision has been overruled expressly or impliedly by the House of Lords or Supreme Court, the court must follow the superior decision. Three: per incuriam — where the decision was given in ignorance of a relevant statute or binding authority: in Williams v Fawcett (1986) the court refused to follow its own earlier decision because it rested on a misreading of court forms; Rickard v Rickard (1990) is a further example. Effect: the exceptions allow limited correction of error while preserving certainty — the Criminal Division adds flexibility where the law was misapplied or misunderstood (R v Taylor (1950); R v Gould (1968); R v Magro (2000)), culminating in R v R (1991), where the marital rape exemption was declared obsolete. Evaluation: the exceptions are narrow and the court will not strain to find them (Davis v Johnson (1979) showed Young's rigidity), so error is corrected only slowly — but this preserves predictability, which the criminal-law flexibility deliberately trades against.
Explain, using the Practice Statement 1966, how the Supreme Court has avoided its own previous decisions. Refer to R v Shivpuri. [AQA Paper 1, 10 marks]
Answer: From London Street Tramways v London County Council (1898) the House of Lords bound itself for certainty. The Practice Statement 1966 declared that former decisions of the House 'may be departed from when it appears right to do so', respecting certainty in contract, property, fiscal and criminal matters. Its use: Conway v Rimmer (1968) — first use, overruling Duncan v Cammell Laird (1942) on Crown privilege; Herrington v British Railways Board (1972) — overruling Addie v Dumbreck (1929) so occupiers owed a duty to child trespassers; Miliangos (1976) — allowing judgments in foreign currency. R v Shivpuri (1986) was the first criminal use: within a year of Anderton v Ryan (1985) the House overruled it on attempted crimes of impossibility under the Criminal Attempts Act 1981, Lord Bridge describing the Statement as abandoning any pretence that the House was infallible. The Supreme Court continues the practice (Knauer v Ministry of Justice (2016)). Effect: the Statement balances certainty — it is used sparingly — with justice, correcting wrong or outdated law without waiting for Parliament.
Explain the difference between overruling, reversing and distinguishing. Refer to Balfour v Balfour and Merritt v Merritt. [AQA Paper 1, 10 marks]
Answer: Reversing: a higher court changes the decision of a lower court in the same case on appeal — e.g. the House of Lords reversed the Court of Appeal in R v R (1991) on the marital rape exemption. Overruling: a court, usually a higher one, departs from a precedent in a different case, so it is no longer binding — R v Shivpuri (1986) overruled Anderton v Ryan (1985). Distinguishing: no precedent is destroyed; instead the judge finds a material difference of fact so the precedent does not apply. Balfour v Balfour (1919): a domestic agreement between husband and wife living amicably is not intended to create legal relations, so it is not a contract. Merritt v Merritt (1976): the couple were separated and the agreement over the matrimonial home was in writing — material differences meant Balfour did not apply and the agreement was enforceable. Distinguishing is the daily tool; overruling and reversing are exceptional and change the law for the future.
Evaluate the extent to which the Court of Appeal can avoid its own previous decisions. [OCR H418 Component 3, 20 marks]
Answer: Young v Bristol Aeroplane (1944) makes the Court of Appeal bound by its own decisions, with three exceptions: conflicting decisions (Tiverton Estates v Wearwell (1974)); decisions overruled by the Supreme Court; and per incuriam (Williams v Fawcett (1986); Rickard v Rickard (1990)). The limits are real: in Davis v Johnson (1979) the court refused to depart from its own decision given days earlier, despite Lord Denning's argument that it should be free to correct its own errors. The Criminal Division is more flexible — it departs where the law was misapplied or misunderstood (R v Taylor (1950); R v Gould (1968); R v Magro (2000)) — and R v R (1991) shows a Practice-Statement-style departure: the marital rape exemption was declared a common-law fiction with no place in modern law, affirmed by the House of Lords. The Court of Appeal has also used superior-court signal to escape precedent: in R v James; R v Karimi (2006) it followed the Privy Council's Holley (2005) in preference to R v Smith (Morgan) (2000), effectively overruling its own (and the House of Lords') authority. Evaluation: in civil law the Court of Appeal remains tightly bound — corrections come mainly from the Supreme Court, at cost and delay; in criminal law flexibility is real because justice outweighs certainty for an accused. The compromise protects consistency, but the civil exceptions are so narrow that the court sometimes perpetuates error until the Supreme Court intervenes.
'Persuasive precedent should be treated as binding.' Evaluate this statement. [AQA Paper 1, 25 marks]
Answer: Arguments for treating persuasive precedent as binding: quality and expertise — obiter dicta of superior courts are carefully considered (R v Gotts (1992), where the Court of Appeal followed the House of Lords' obiter that duress is no defence to attempted murder, produced consistent law); the Privy Council's Holley (2005) was heard by a panel with a majority of Lords of Appeal in Ordinary precisely to settle English law, and the Court of Appeal followed it in R v James; R v Karimi (2006), avoiding the absurdity of two conflicting authorities (Holley against R v Smith (Morgan) (2000)); treating persuasive precedent as binding promotes certainty and prevents forum shopping between courts. Arguments against: persuasive precedent is not part of the ratio — treating it as binding would blur the ratio/obiter distinction on which certainty depends; foreign and Commonwealth decisions apply different statutes and social conditions; dissenting judgments are minority views by definition; and courts must retain discretion — persuasive material allows distinguishing and development (Balfour v Balfour (1919) had to remain distinguishable for Merritt v Merritt (1976) to correct the rule for separated spouses). Judgement: persuasive precedent should not be formally binding — the ratio/obiter hierarchy is what makes precedent systematic — but James/Karimi shows courts will in practice follow persuasive authority when it carries superior institutional weight (a Privy Council panel of Law Lords) or when the alternative is incoherence; the right approach is persuasive in theory, quasi-binding in practice where consistency demands it.
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