Judges and judicial creativity

Judicial creativity occupies a contested space in English legal method. The orthodox constitutional position, articulated by Blackstone and affirmed in declaratory language by generations of judges, is that courts find law rather than make it. Yet candid observation of judicial practice—especially in the common law, equity, and areas of statutory interpretation—reveals incremental law-making. This tension animates much modern jurisprudence.

The problem is not merely one of description; it engages the separation of powers. Legislative supremacy under the UK's constitution assigns primary law-making authority to Parliament. Judges who innovate risk usurping that role. But equally, rigid adherence to outmoded precedent may frustrate the law's responsiveness to social change. The contemporary settlement, reached through the second half of the twentieth century and refined post-Human Rights Act 1998, attempts to reconcile these competing demands.

This note examines the mechanisms and limits of judicial creativity. It traces the shift from the declaratory theory to modern incrementalism; identifies the doctrinal tools—distinguishing, overruling, filling lacunae—through which judges develop law; explores the constitutional constraints imposed by separation of powers and legislative supremacy; and surveys academic debate on the legitimacy and extent of judicial law-making. Mastery of this topic requires students to move beyond simplistic either/or accounts ('judges never make law' or 'judges freely legislate') toward a nuanced understanding of when, how, and within what limits courts may develop legal doctrine.

The declaratory theory dominated English jurisprudence from Blackstone through the nineteenth century. In its strongest form, the theory maintained that the common law comprised a body of immemorial custom, existing independently of judges, who merely 'discovered' and declared pre-existing rules. Blackstone wrote that judges were 'the living oracles' who must know and declare what the law is, not what it ought to be. This fiction sustained parliamentary sovereignty: if judges found law rather than made it, they did not compete with Parliament's legislative function.

The House of Lords' self-imposed rule in Beamish v Beamish (1861) and formalised in London Tramways Co Ltd v London County Council [1898] AC 375 that it could never depart from its own prior decisions epitomised declaratory thinking. If a past judgment correctly declared the law, it must be followed; if incorrect, only Parliament could cure the error. This rigidity produced anomalies, including preserved mistakes that judges recognised but felt unable to correct.

By the early twentieth century, declaratory theory came under sustained attack. Legal realists in America and, in England, scholars such as Goodhart and later Hart, demonstrated that judges necessarily exercised choice in formulating rationes, selecting material facts, and distinguishing precedents. The famous dictum of Lord Radcliffe in Davis Contractors Ltd v Fareham UDC [1956] AC 696, acknowledging that precedent operates 'in the hands of the judges' with 'a good deal of play at the joints', signalled growing judicial candour.

The watershed was the Practice Statement (Judicial Precedent) [1966] 1 WLR 1234, by which the House of Lords announced it would depart from its own previous decisions 'when it appears right to do so'. This abandonment of London Tramways marked formal recognition that the highest court must adapt law to changing conditions. Lord Reid's contemporaneous extra-judicial writings—describing the declaratory theory as a 'fairy tale' and acknowledging limited interstitial law-making—confirmed the shift. The modern orthodoxy accepts incremental judicial development within constitutional constraints.

Incrementalism and constitutional boundaries

The foundational principle is that judges may develop law incrementally but must not usurp the legislative function. Lord Reid's statement in Shaw v DPP [1962] AC 220 established the modern position. While dissenting on the outcome, Reid rejected the majority's assertion of a general power to create new offences: Parliament, not courts, has primary responsibility for major legal change. Lord Diplock reiterated this in Duport Steels Ltd v Sirs [1980] 1 WLR 142: 'it cannot be too frequently emphasised that the British constitution, though largely unwritten, is firmly based on the separation of powers; Parliament makes the laws, the judiciary interpret them.'

Yet 'interpretation' encompasses more than mechanical application. Courts necessarily refine rules, resolve ambiguities, and adapt doctrine to unforeseen circumstances. Lord Goff described the common law in Kleinwort Benson Ltd v Lincoln CC [1999] 2 AC 349 as a 'living system' that evolves through judicial decision. The permissible extent of such evolution depends on the field: common law subjects permit broader creativity than statutory interpretation (where primacy lies with Parliament) or areas of recent legislative activity (where judicial innovation may pre-empt or contradict legislative choice).

The 'clear gap' and avoidance of legislative function

Judges may fill lacunae—gaps or silences in existing law—but only within limits. The archetypal case is Airedale NHS Trust v Bland [1993] AC 789, where the House of Lords addressed the lawfulness of withdrawing artificial nutrition and hydration from a patient in a persistent vegetative state. No statute or precedent directly governed the question. The Law Lords resolved it by applying and extending established principles of consent and best interests, but emphasised that prospective regulation was Parliament's province. Lord Browne-Wilkinson remarked that the case illustrated the limits of judicial law-making in areas crying out for legislation.

Declaratory theory and its abandonment

The landmark shift came with the Practice Statement (Judicial Precedent) [1966] 1 WLR 1234, wherein the House of Lords announced it would treat previous decisions as 'normally binding' but depart when 'it appears right to do so'. The Statement acknowledged that 'too rigid adherence to precedent may lead to injustice in a particular case and also unduly restrict the proper development of the law.' Though used sparingly—fewer than two dozen times before the House's replacement—it legitimised explicit overruling and acknowledged the law-making function of the apex court.

Conway v Rimmer [1968] AC 910 was the first substantive application, overruling Duncan v Cammell Laird [1942] AC 624 on Crown privilege. The House held that courts, not ministers, had final say on whether public interest immunity barred disclosure. This reassertion of judicial authority over executive claims marked a new willingness to depart from precedent in the service of legal principle.

Marital rape and common law evolution

R v R [1992] 1 AC 599 remains the most controversial exercise of common law creativity in criminal law. The House of Lords abolished the centuries-old rule that a husband could not rape his wife, which rested on the legal fiction of irrevocable consent by marriage. Lord Keith, delivering the leading speech, held that the common law was 'capable of evolving in the light of changing social, economic and cultural developments.' The exemption, never embodied in statute, contradicted modern values and piecemeal statutory erosion of marital immunity. While retrospective application troubled some commentators, the European Court of Human Rights in SW v United Kingdom (1996) 21 EHRR 363 upheld the decision, finding the development reasonably foreseeable and consonant with Art 7 ECHR.

Privacy and incremental recognition

Campbell v MGN Ltd [2004] UKHL 22 illustrates creativity in tort. Although English law historically lacked a general privacy tort, the House extended the equitable action for breach of confidence to protect informational privacy, catalysed by Art 8 ECHR and the HRA s 6 duty on courts (as public authorities) to act compatibly with Convention rights. Baroness Hale remarked that the 'old action for breach of confidence' had been adapted to recognise privacy interests, a development 'not the creation of a new cause of action' but 'the absorption of Convention rights into English law.' The rhetoric was incremental, but the effect was recognisably creative.

Statutory interpretation and judicial legislation

Ghaidan v Godin-Mendoza [2004] UKHL 30 pushed HRA s 3 to its limits. The Rent Act 1977 Sch 1 para 2 granted succession rights to a 'surviving spouse' or person 'living with the original tenant as his or her wife or husband'. The Court of Appeal held that a same-sex partner could not qualify. The House of Lords reversed, reading the provision to include same-sex partners notwithstanding the heterosexual language. Lord Nicholls held that s 3 required this reading to avoid discrimination contrary to Art 14 read with Art 8, even though it contradicted Parliament's original intention. This bold interpretive move blurred the line between construction and legislation, prompting academic criticism that s 3 permits judicial law-making under the guise of interpretation.

Negligence and duty of care innovation

Caparo Industries plc v Dickman [1990] 2 AC 605 restated the test for duty of care in negligence, replacing broad principle with a structured three-stage inquiry (foreseeability, proximity, fair-just-and-reasonable). While this might appear restrictive, the third limb—whether imposing a duty is 'fair, just and reasonable'—confers broad discretion. Subsequent cases have used this limb to refuse duties in novel contexts (pure economic loss, public authority liability), illustrating how judicial creativity can both expand and contract liability. Lord Bridge emphasised that 'concepts of proximity and fairness' involve 'a combination of factual and policy considerations,' openly acknowledging judicial policy-making.

Limits of creativity

Airedale NHS Trust v Bland [1993] AC 789 saw the House authorise withdrawal of artificial nutrition from a patient in persistent vegetative state, holding it lawful where continued treatment was not in the patient's best interests. Yet every Law Lord emphasised the decision's difficulty and the urgent need for legislation. Lord Browne-Wilkinson remarked, 'I cannot help feeling that it would be desirable for Parliament to intervene to regulate these tragic cases.' The unanimous anxiety underscored that some questions—however urgent—press at the edges of legitimate judicial law-making.

See practice questions below.

See further reading below.