Jurisprudence & Legal Theory (LLB)

# Jurisprudence & Legal Theory (LLB) — Topic Notes
## LA3005 University of London | UK LLB Jurisprudence

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## 1. Hart–Dworkin Debate: Principles vs Rules and the Right Answer Thesis

### Hart's Model: Rules and Discretion
H.L.A. Hart argued that law consists of primary rules (imposing obligations) and secondary rules (rules about rules — recognition, change, adjudication). At the margins — the penumbra — rules run out, and judges exercise residual **legislative discretion**.

Hart's rule of recognition identifies valid law by source (pedigree), not content. Moral merit does not determine legal validity. This is the separability thesis.

### Dworkin's Challenge: Principles Are Law
Ronald Dworkin attacked Hart on two fronts:
1. **The model of rules is incomplete.** Courts regularly invoke *principles* (e.g. "no man may profit from his own wrong") that are not identifiable by pedigree but are plainly binding. They differ from rules in that they have *weight* rather than triggering on/off application.
2. **Hard cases have right answers.** Even in contested cases, Hercules J — an idealised judge with superhuman capacity — can and must identify the single answer that best fits and justifies the existing body of legal materials.

### Judicial Application: Principles in Practice
The distinction between rules and principles, and the question of whether courts create or discover law, is illustrated across several judicial contexts.

In **Conway v Secretary of State for Justice** [2018] EWCA Civ 16, the Court of Appeal considered whether the blanket prohibition on assisting suicide in s 2 Suicide Act 1961 was compatible with Article 8 ECHR. The court held the prohibition was compatible: while Article 8 protects autonomy and dignity (a legal *principle* with weight), Parliament's decision to use a general criminal prohibition to protect the vulnerable was a rational and proportionate exercise of legislative judgment. The court declined to substitute its own view — illustrating the Hartian position that courts defer to settled rules, not the Dworkinian position that courts always have a right answer based on principle.

Courts exercising a Dworkinian interpretive approach must decide which principles carry greatest weight. In **AM (Zimbabwe) v Secretary of State for the Home Department** [2020] UKSC 17, the Supreme Court reconsidered the threshold for Article 3 ECHR (no one shall be subjected to torture or inhuman treatment). The court declined to deport the applicant despite his criminal record because the principle of protection from inhuman treatment — a principle of great weight in the legal order — constrained the rule otherwise permitting deportation. This reflects Dworkin's point that principles constrain outcomes even where strict rules might suggest otherwise.

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## 2. Natural Law Theory (Aquinas, Finnis)

### Aquinas
For Aquinas, law is an ordinance of reason for the common good, made by whoever has care of the community and promulgated. Lex iniusta non est lex — an unjust law is no law at all. There is a hierarchical structure: eternal law → natural law → human law → divine law. Human law derives its binding force from conformity with natural law.

### Finnis's New Natural Law
John Finnis in *Natural Law and Natural Rights* (1980) identifies seven basic goods (life, knowledge, play, aesthetic experience, sociability/friendship, practical reasonableness, religion) that are self-evident and incommensurable. Law is legitimate when it promotes these goods and is fashioned by practical reason. Finnis differs from Aquinas by grounding natural law in practical reason rather than metaphysics.

### The Relevance of Natural Law to Real Courts
The question of whether unjust or morally defective rules retain legal validity arises sharply in rights adjudication. In **Dominic Suraj v Attorney General of Trinidad and Tobago** [2022] UKPC 26, the Privy Council struck down COVID-19 gathering restrictions as unconstitutional violations of fundamental human rights. The Privy Council's analysis relied on the Constitution of Trinidad and Tobago as a higher law against which ordinary legislation is measured — structurally analogous to the natural law claim that human law must conform to a higher normative order to be valid.

Similarly, in **Omega** (Case C-36/02) [2004] ECJ, the court held that Germany could lawfully prohibit laser games simulating human killing, because the protection of human dignity — a fundamental value — was capable of justifying restrictions on economic freedoms. The implicit claim is that some values (human dignity) stand above ordinary positive rules; this mirrors natural law reasoning about pre-political moral constraints on legal authority.

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## 3. Legal Positivism: Austin, Bentham, Hart

### Austin: Command Theory
For Austin, law is a command of the sovereign — a determinate superior person or body habitually obeyed and not itself in the habit of obeying another — backed by a sanction. Every law is a command; every command is a wish directed to another.

Bentham attacked common law as "dog law" — retrospective, uncertain, made up by judges. He preferred codification. Both Bentham and Austin share the separability thesis: law and morality are conceptually distinct.

### Hart's Critique of Austin
Hart showed that Austin's command theory cannot account for rules that confer powers (e.g. contract, marriage, will-making). These are not commands backed by sanctions. Nor can Austin explain the continuity of law on a sovereign's death or the persistence of laws enacted before the current sovereign existed.

Hart replaced the command model with the concept of a **rule of recognition** — an ultimate social rule accepted by officials, especially judges, from the internal point of view, identifying which other rules count as law.

### The Separation Thesis in Practice
The Hart–Fuller debate (see below) is the classic arena for testing whether morality affects legal validity. In **Butt v Secretary of State for the Home Department** [2019] EWCA Civ 256, the court reviewed whether Prevent Duty Guidance — requiring universities to suppress extremist speech — was compatible with the statutory duty of freedom of speech. The positivist would say: the law is whatever Parliament enacted; its moral quality is irrelevant to validity. The court approached the matter as one of statutory interpretation: did Parliament intend to limit free expression? The legal duty was analysed as a matter of valid enacted law, not its moral desirability.

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## 4. Hart–Fuller Debate: Morality and Law

### The Exchange
The Hart–Fuller debate began with Hart's 1958 Holmes Lecture and Fuller's reply. Hart distinguished the concept of law (what law *is*) from its criticism (what law *ought to be*). Fuller countered with his *inner morality of law*: eight procedural requirements (generality, promulgation, non-retroactivity, clarity, non-contradiction, possibility of compliance, constancy, congruence) that law must satisfy to count as law at all. These are not external moral demands but internal to the very enterprise of lawmaking.

The informer case (a Nazi statute used retrospectively to punish a woman who denounced her husband) divides them: Hart says apply the lex mitior doctrine as a matter of legal administration; Fuller says the statute was never valid law.

### Procedural Rule of Law in Practice
Fuller's inner morality requirements are reflected in constitutional protections against arbitrary state power. In **A Reference by the Attorney General for Northern Ireland** [2026] UKSC 16, the Supreme Court considered whether informal deprivation of liberty (placing incapacitated adults in care settings without a court order) satisfied Article 5(1) ECHR — a right to liberty "in accordance with a procedure prescribed by law". The requirement that liberty restrictions be "prescribed by law" maps onto Fuller's requirement of promulgation, clarity and generality: a rule depriving people of liberty must be accessible, foreseeable, and susceptible to consistent application.

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## 5. Raz's Theory: Authority and the Service Conception

### The Service Conception
Joseph Raz argues that authority is legitimate only if it enables subjects to better conform to reasons that apply to them independently. The authority mediates between subjects and the right reasons for action. Three theses:
- **Dependence thesis**: authoritative directives should be based on reasons already applicable to subjects.
- **Normal justification thesis**: authority is legitimate when following it leads subjects to better comply with underlying reasons.
- **Preemption thesis**: authoritative directives replace, rather than add to, subjects' prior reasons.

Raz's account is exclusionary: legal rules preempt first-order reasoning. A subject should comply with law not because of the merits of each case but because the authority has already weighed those merits.

### Judicial Deference and Preemption
The preemption thesis illuminates why courts defer to legislative choices even in hard cases. In **RR v Secretary of State for Work and Pensions** [2019] UKSC 52, the Supreme Court considered whether a tribunal could disapply secondary legislation (bedroom tax regulations) that violated the Human Rights Act 1998. The court held that the HRA itself requires disapplication of incompatible subordinate legislation — the authority of Parliament as expressed in the primary Act pre-empted the inferior regulation. This is consistent with Raz's view: authority operates hierarchically, with higher authority pre-empting lower.

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## 6. Legal Realism: Indeterminacy and Judicial Discretion

### American Realism (Holmes, Frank, Llewellyn)
American Legal Realists held that legal rules underdetermine outcomes. The real determinants of decisions are the social, psychological, and economic facts of particular disputes. Holmes: "The life of the law has not been logic; it has been experience." Frank emphasised fact-scepticism (juries are unpredictable); Llewellyn emphasised rule-scepticism (paper rules diverge from real rules).

### Scandinavian Realism (Hagerström, Ross)
Scandinavian Realists attacked the metaphysical status of legal concepts like rights and duties. Ross: a valid legal norm is one that courts will actually apply. Legal propositions are predictions about judicial behaviour, not descriptions of moral facts.

### Discretion and Realist Reasoning in Courts
In **Gibson v United States of America** [2007] UKPC 52, the Privy Council addressed whether it could depart from its own precedent. The Board noted that the House of Lords (and the Privy Council) possesses inherent discretion to depart from prior decisions — the 1966 Practice Statement abolished absolute stare decisis. This institutional acknowledgement that binding rules can be overridden by the court itself supports the realist claim that courts have residual creative authority. The ratio is that appellate courts are not rigidly bound by their own precedents: the Privy Council has inherent freedom to depart, and since 1966 so does the House of Lords/Supreme Court.

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## 7. Rule of Law: Formal and Substantive Dimensions

### Formal Rule of Law (Dicey, Raz)
Dicey identified three elements: (1) absence of arbitrary power — no man punishable except for breach of law established before ordinary courts; (2) equality before the law; (3) constitutional law as consequence, not source, of individual rights.

Raz's formal rule of law: laws must be prospective, open, clear, stable, certain; adjudication must be independent; access to courts must be available. These are procedural virtues — they say nothing about the content of the law.

### Substantive Rule of Law (Dworkin, Allan)
Substantive accounts (Dworkin, T.R.S. Allan) hold that the rule of law requires respect for individual rights — that government must act consistently with fundamental rights even if it follows formal procedures.

### Rule of Law in UK Constitutional Practice
The requirement that any liberty restriction be "prescribed by law" — a core rule of law requirement — was central to **A Reference by the Attorney General for Northern Ireland** [2026] UKSC 16. The court held that informal care placements of incapacitated adults must comply with Article 5(1) ECHR; deprivation of liberty must be through a procedure prescribed by law, not merely customary practice. This reflects both Raz's requirement of legal clarity and the substantive concern that vulnerable individuals' rights not be curtailed without legal authorisation.

The outer limits of state jurisdiction — an aspect of Dicey's rule of law point about courts constraining government — arose in **R (Barclay) v Secretary of State for Justice** [2014] UKSC 54. The Supreme Court held that UK courts lacked jurisdiction to review the Privy Council's recommendation to approve Channel Islands legislation. The constitutional relationship between the UK and its Crown Dependencies is a matter of constitutional arrangement, not susceptible to ordinary judicial review — a limit on courts' rule-of-law supervisory function.

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## 8. Legal Reasoning and Adjudication

### Interpretivist Approach (Dworkin — Law as Integrity)
Dworkin's later work in *Law's Empire* (1986) argues that judges should interpret the legal materials to find the answer that best fits and justifies the whole body of law. Law as integrity requires that the political community act coherently, governed by consistent principles. This is distinguished from legal pragmatism (judges decide best for the future) and conventionalism (judges defer to explicit past decisions).

### Proportionality in Rights-Based Adjudication
The interpretive methodology of rights adjudication was on display in **Schmidberger** (Case C-112/00) [2003]. The ECJ balanced the fundamental right to freedom of expression and assembly against the fundamental principle of free movement of goods. Austria's failure to ban the protest was held proportionate. The judgment exemplifies Dworkinian law-as-integrity: the court did not apply a mechanical rule but identified the principle (fundamental rights can override economic freedoms) that best integrated the EU's normative commitments.

Likewise, in **Omega** (Case C-36/02) [2004], the ECJ balanced human dignity as a fundamental value against free movement of services. Germany's prohibition of a laser game was upheld because human dignity — while not uniformly conceived across Member States — was a principle of sufficient weight to justify the restriction. The reasoning is quintessentially interpretivist: the court sought the answer best fitting all of the EU's normative commitments.

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## 9. Feminist Jurisprudence

### Overview
Feminist jurisprudence critiques law's claim to neutrality and universality. Liberal feminism (Wollstonecraft, MacKinnon) seeks formal equality — equal application of rules. Radical feminism argues that formal equality masks substantive inequality because the baseline is male-constructed. Care ethics (Gilligan) argues that an ethic of care, attentive to relationships and context, should supplement rights-based reasoning.

### Freedom of Expression and Gendered Identity
The tension between formal equality and substantive power is illustrated by the employment law case of **Kristie Higgs v Farmor's School** [2023] EAT 89. A school employee was dismissed after posting views about relationships education. The EAT held that the employer had discriminated on the basis of protected beliefs. From a feminist jurisprudential perspective, this case illustrates how the formal equality framework (religion/belief protection is symmetrical) can produce results that some feminist theorists would analyse as masking contested gender-power relations — with the formal legal categories of "protected belief" failing to fully address the substantive stakes for trans and gender-non-conforming individuals.

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## 10. Liberalism and Law (Mill, Rawls, Nozick)

### Mill's Harm Principle
J.S. Mill's harm principle (On Liberty, 1859): the only legitimate ground for society to exercise power over an individual is to prevent harm to others. Self-regarding conduct is beyond legal coercion.

### Rawls: Justice as Fairness
Rawls's original position and veil of ignorance generate two principles: (1) equal basic liberties; (2) social and economic inequalities must be (a) attached to positions open to all under fair equality of opportunity and (b) to the greatest benefit of the least-advantaged (difference principle).

### The Harm Principle in Assisted Dying
**Conway v Secretary of State for Justice** [2018] EWCA Civ 16 is a direct test of Mill's harm principle. The court accepted that the prohibition on assisting suicide serves a legitimate aim — protecting the vulnerable from potential abuse — but Millian analysis would ask: is the self-regarding choice of a competent adult to end their own life a proper subject of legal prohibition? The court held the restriction was compatible with Article 8 ECHR, declining to hold that the blanket prohibition violated the right to personal autonomy — a tension with strict Millian liberalism.

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