Cambridge A-Level Law: The English Legal System (9084)

This guide covers Topic 1 English Legal System, the first of four topics in Cambridge International AS & A Level Law (9084), for examination 2026-2028. The syllabus introduces students to the law of England and Wales – the term “English law” is used throughout to mean the law of England and Wales specifically.

Where this fits in 9084

Topics 1-2 (English legal system, Criminal law) form the AS Level. The full A Level adds Topics 3-4 (Law of contract, Law of tort). Topic 1’s grounding in how English law is made, sourced and administered underpins every later topic, since all substantive law studied later operates within this legal system.

Syllabus coverage

CAMBRIDGE INTERNATIONAL AS & A LEVEL LAW (9084) — TOPIC 1 ENGLISH LEGAL SYSTEM

• 1.1 Principles and sources of English law — the sources from which English law derives (legislation, case law, and other sources) and the underlying principles that structure the legal system
• 1.2 Machinery of justice — the courts and institutions through which law is applied and disputes resolved
• 1.3 Legal personnel — the roles of judges, lawyers and other legal professionals within the system

How to approach it

Because this topic establishes vocabulary and institutional structure used throughout the qualification, build a clear map of how a legal dispute moves through the system – from source of law, to court, to the legal personnel involved – rather than learning the three sub-topics in isolation. Sources of law questions often ask candidates to compare different sources (legislation versus case law, for instance), so practise explaining not just what each source is but how they interact and which takes precedence. Since Paper 1 tests this topic with both short-answer and extended-essay questions, practise both quick, precise recall and longer, structured argument as distinct exam skills.

Official syllabus

Cambridge International AS & A Level Law (9084) syllabus for examination 2026, 2027 and 2028 — cambridgeinternational.org.

Sources of law

English law draws on several sources, and questions usually turn on the relationship between them.

Legislation is the supreme source. Under parliamentary sovereignty, an Act of Parliament can create or repeal any law, and no court may set one aside.

Delegated legislation is law made by another body under authority granted by an enabling Act — statutory instruments, byelaws and Orders in Council. It is controlled by parliamentary scrutiny and by judicial review, which can strike it down as ultra vires where the maker exceeded the powers given.

Case law develops through judicial decisions and the doctrine of precedent.

Custom and equity remain historically important, equity supplying remedies such as injunction and specific performance where common law damages are inadequate.

The legislative process

A Bill may be public (affecting the population at large) or private (affecting a particular body). Most begin in the Commons, and finance Bills must.

First Reading    name and main aims read out; no debate
Second Reading   main debate on the principles; vote
Committee Stage  clause-by-clause examination by 16-50 MPs
Report Stage     committee reports amendments back to the House
Third Reading    final vote on the Bill as amended
Other House      the whole process repeats in the Lords
Royal Assent     the Bill becomes an Act

The Lords may delay but not indefinitely block; the Parliament Acts allow a Bill to proceed without their consent in defined circumstances.

Statutory interpretation

Where the words of an Act are unclear, judges apply established approaches: the literal rule (ordinary meaning, even if the result is harsh), the golden rule (depart from the literal meaning to avoid an absurd result), the mischief rule (identify the defect the Act was passed to remedy), and the increasingly dominant purposive approach (give effect to Parliament’s purpose).

These are supported by intrinsic aids within the Act itself and extrinsic aids such as dictionaries, Law Commission reports and Hansard.

Judicial precedent

Stare decisis — stand by what has been decided — requires courts to follow decisions of higher courts on similar facts. The binding element is the ratio decidendi, the legal reasoning essential to the decision. Anything said “by the way” is obiter dicta and is persuasive only.

Judges avoid an inconvenient precedent by distinguishing on the facts, and higher courts may overrule an earlier decision or reverse the decision below on appeal. The court hierarchy determines who binds whom, so knowing that hierarchy is the foundation of the whole topic.

Worked example

A statute makes it an offence to take a “vehicle” into a public park. A defendant is prosecuted for taking a child’s pedal cycle.

Literal rule    -> a cycle is arguably a vehicle; conviction, possibly a harsh result
Golden rule     -> if literal application produces absurdity, modify the meaning
Mischief rule   -> what defect did Parliament address? If motor traffic and noise,
                   a pedal cycle falls outside it, so acquit
Purposive       -> give effect to Parliament's broader purpose in passing the Act

Strong answers do not merely define the rules — they apply each to the facts and reach a reasoned conclusion on which approach a court would prefer.

Common mistakes

Confusing ratio decidendi with obiter dicta. Treating distinguishing and overruling as interchangeable — distinguishing sidesteps a precedent on the facts, overruling removes its authority. Saying the Lords can veto a Bill outright. Describing delegated legislation as made by Parliament rather than under authority granted by it. Setting out the interpretation rules without applying them to the problem, which loses most of the marks in a scenario question.

Quick revision checklist

• List the sources of English law and rank them, explaining parliamentary sovereignty.
• Describe every stage of the legislative process in order.
• Explain delegated legislation, its forms, and both controls on it including ultra vires.
• Apply the literal, golden, mischief and purposive approaches to a set of facts.
• Define ratio decidendi and obiter dicta, and explain distinguishing, overruling and reversing.
• Explain how the court hierarchy determines binding precedent.