ARTICLE TEXT

Most judges write their judgments and leave the commentary to others. Lord Denning did both. The Discipline of Law, published in 1979 when he was eighty and still Master of the Rolls, is his own guided tour of the cases in which he tried to change English law. It was a bestseller, an unusual fate for a legal book, and it has been in print ever since. It remains the most readable introduction to the common law method ever written by a judge, and one of the most partial.

What the Book Is

The book is divided into seven parts, each dealing with an area where Denning believed the law had gone wrong and he had put it right. He begins with the construction of documents and statutes, arguing for a purposive approach against literalism. He moves to the misuse of ministerial powers, the foundation of modern judicial review. He deals with locus standi, the abuse of power by trade unions and other groups, and then with the two subjects for which he is most remembered: the High Trees case and promissory estoppel, and the law of negligence. The final part is on the doctrine of precedent, where he explains why he thought the Court of Appeal should not always be bound by its own decisions or by the House of Lords.

Each part is built from long extracts of judgments, linked by Denning’s commentary in the first person. He tells the reader what the case was about, what the previous law said, why he thought it unjust, and what he did. The effect is intimate and immediate. Students who struggle with the reported version of Central London Property Trust v High Trees House will understand it after reading Denning’s own account of the landlord, the wartime flats and the promise to accept half rent.

The Argument

Denning’s thesis is simple. Principles laid down by judges in the nineteenth century, he writes, are not suited to the social conditions and social opinion of the twentieth. The judge’s task is to do justice in the case before him, and precedent is a servant of that task, not its master. Where the law is unjust, the judge should mould it. Where a statute produces absurdity, the judge should fill the gap Parliament would have filled had it thought of the point.

This is stated with such charm and confidence that it is easy to forget how controversial it was. The House of Lords repeatedly reversed him. In Davis v Johnson, decided the year before the book appeared, the Lords rebuked the Court of Appeal in unusually strong terms for refusing to follow its own precedents. Many of Denning’s innovations, including the doctrine of inequality of bargaining power from Lloyds Bank v Bundy, were later narrowed or rejected. Others, including promissory estoppel, the Mareva injunction and much of modern administrative law, became permanent.

Reading It Critically

The book should be read for what it is: a case for the defence, written by the defendant. Denning presents every dispute as a contest between justice and dead formalism, with himself on the side of justice. Reviewers at the time noted that the picture was too simple. Legal certainty is itself a form of justice; a landlord, a bank or a business needs to know the law in advance, not to discover it from a judge’s sense of fairness after the event. Stephen Sedley, later a Court of Appeal judge himself, described the book as unashamedly autobiographical and was sharply critical of its politics, particularly on trade unions.

Readers should also know what came after. Denning’s later book, What Next in the Law, published in 1982, contained passages about jury composition and immigrant communities that caused public outrage. The book was withdrawn and reissued, and he retired within months. The Discipline of Law shows him at his best; it should be read with an awareness that the same instinct for personal judgment over rule had a darker side.

Why It Still Matters

For students, the book teaches three things no textbook can. It shows how a judge actually reasons, from facts to sympathy to principle. It shows how the common law changes, case by case, through argument rather than decree. And it shows the tension at the heart of the judicial role between doing justice and applying the law, a tension every future judge and advocate in Bangladesh will feel. Denning came down firmly on one side. The reader’s job is to decide whether he was right.

Verdict

Essential, enjoyable and not to be trusted entirely. Read it early in your legal education, and then read the judgments that reversed him.

Sources

1. Wildy & Sons, The Discipline of Law (Butterworths 1979), bibliographic details: https://www.wildy.com/isbn/9780406176042/the-discipline-of-law-hardback-butterworth-co
2. Haldane Society Bulletin, review of The Discipline of Law (1979): https://legalform.blog/wp-content/uploads/2021/01/haldane-society-bulletin-review-of-denning-1979.pdf
3. Alberta Law Review, review by Gerald Gall: https://albertalawreview.com/index.php/ALR/article/download/2203/2192/2315
4. Internet Archive, The Discipline of Law (full text for borrowing): https://archive.org/details/disciplineoflaw0000denn