SQE1 Constitutional & Administrative Law: Complete Guide

Candidates frequently lose marks on SQE1 by confusing conventions with legal rules, or by misapplying judicial review grounds — examiners test these foundational distinctions across the entire constitutional syllabus.

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1. Parliamentary Sovereignty

Parliamentary Sovereignty

Parliament is the supreme legal authority in the UK. It can make or unmake any law, and no court can override an Act of Parliament. Understand Dicey's three limbs, the enrolled Act rule, implied repeal, and how the principle applies in modern law (EU withdrawal, devolution, human rights).

Key concepts: Dicey's doctrine, enrolled Act rule, implied repeal, constitutional statutes, Factortame, European Union (Withdrawal) Act 2018.

2. The Rule of Law and Separation of Powers

The Rule of Law and Separation of Powers

The rule of law requires everyone — including government — to be subject to law. The separation of powers distributes authority among legislature, executive and judiciary. The UK has a flexible separation with deliberate overlaps, unlike strict American-style separation.

Key concepts: Dicey's rule of law, Lord Bingham's eight principles, judicial independence, Constitutional Reform Act 2005, rule of law constraints on government action.

3. Constitutional Conventions

Constitutional Conventions

Constitutional conventions are non-legal rules of constitutional practice that are politically binding but not legally enforceable by courts. This is the core trap: courts recognise conventions but will not enforce them or award remedies for breach.

Key concepts: Jennings test, Salisbury Convention, collective and individual ministerial responsibility, Sewel Convention, non-justiciability.

4. The Crown and Prerogative Powers

The Crown and Prerogative Powers

Prerogative powers are residual powers of the Crown (now exercised by ministers) for matters such as foreign policy, defence, treaty-making, and honours. The key question: which prerogative powers are subject to judicial review? The answer: it depends on justiciability.

Key concepts: Prerogative powers, justiciability test, national security, foreign policy, ministerial accountability, conditions on prerogative powers.

5. Judicial Review

Judicial Review

Judicial review is the process by which the High Court supervises the legality of decisions made by public bodies. The three grounds are illegality (lack of power), irrationality (Wednesbury unreasonableness), and procedural impropriety (breach of fair procedures). This is a high-yield topic — master it.

Key concepts: Three grounds, standing, time limits, permission stage, remedies (quashing orders, mandatory orders, prohibiting orders, declarations), natural justice, proportionality.

6. Legitimate Expectation

Legitimate Expectation

Legitimate expectation protects individuals who have reasonably relied on clear representations made by public bodies. It is a frequent ground for judicial review challenge. Procedural legitimate expectation (requiring consultation) is more likely to succeed than substantive legitimate expectation (mandating an outcome).

Key concepts: Clear representation, reasonable reliance, detrimental reliance, procedural vs substantive legitimate expectation, consultation, estoppel vs legitimate expectation.

7. Human Rights Act 1998

Human Rights Act 1998

The HRA 1998 incorporates the European Convention on Human Rights into UK domestic law. Section 3 requires interpretation of legislation compatibly with Convention rights. Section 4 allows declarations of incompatibility (but does not strike down legislation). Section 6 makes it unlawful for public authorities to breach Convention rights.

Key concepts: Section 3 interpretation, section 4 declarations of incompatibility, section 6 public authority obligations, qualified rights, proportionality test, absolute rights.

8. Devolution in the UK Constitution

Devolution in the UK Constitution

Devolution is the transfer of legislative and executive power to Scotland, Wales and Northern Ireland. Understanding reserved (Westminster's) versus devolved matters is essential. The Sewel Convention is political, not legally enforceable.

Key concepts: Reserved and devolved matters, legislative competence, Scotland Act, Government of Wales Acts, Good Friday Agreement, Sewel Convention, northern Ireland power-sharing.

9. EU Law in the UK Constitutional Framework

EU Law in the UK Constitutional Framework

During EU membership (1973-2020), EU law had supremacy and direct effect in the UK. Factortame showed courts could disapply conflicting UK law. The European Union (Withdrawal) Act 2018 repealed the European Communities Act and converted retained EU law into domestic law with no special status.

Key concepts: European Communities Act 1972, Factortame, supremacy, direct effect, European Union (Withdrawal) Act 2018, retained law, Trade and Cooperation Agreement.

10. Statutory Interpretation in Constitutional Law

Statutory Interpretation in Constitutional Law

Statutory interpretation takes on special significance when fundamental rights or constitutional principles are engaged. The principle of legality presumes Parliament does not intend to override fundamental rights without express language. Section 3 HRA requires compatible interpretation. Constitutional statutes require express repeal.

Key concepts: Principle of legality, section 3 HRA interpretation, constitutional statutes, presumption of constitutionality, rule against doubtful penalisation, ouster clauses.

Exam tip

Conventions are the SQE1 trap door—courts recognise them but will not enforce them. In every question involving Parliament's procedures, ministerial conduct or the Sewel Convention, ask first: is this legally enforceable or merely politically binding? If someone is claiming a breach of convention, the answer is almost always that courts will not intervene.

What Is Constitutional & Administrative Law?

Candidates often lose marks on SQE1 by confusing constitutional principles with legal conventions — examiners test this distinction repeatedly. Constitutional & Administrative Law is one of the most conceptually demanding subjects in the SQE1 Functioning Legal Knowledge module. It underpins the relationship between the state and the individual — covering everything from the powers of Parliament and the courts to the grounds on which government decisions can be challenged. This complete guide maps all the core topics you need to master.

Core Areas Tested in SQE1

The SQE1 syllabus for Constitutional & Administrative Law covers these interconnected areas:

Sources of the Constitution — the UK has no single constitutional document. You must understand Acts of Parliament, common law, constitutional conventions, the royal prerogative, and authoritative texts. Questions test whether you can identify the correct source of a constitutional rule.

Parliamentary Sovereignty — the foundational doctrine. You need to understand how it operates with EU law, the Human Rights Act, and devolution. Watch for questions on implied repeal and whether constitutional statutes are immune from implied repeal.

Separation of Powers — how authority distributes between legislature, executive and judiciary. The Constitutional Reform Act 2005 was significant. Questions test your understanding of how these institutions interact and the practical limits on each branch.

Rule of Law — a core principle requiring government to act within law and individuals to have access to justice. You should recognise how this principle applies in scenario-based questions involving the exercise of public power.

Judicial Review — the process by which courts supervise the legality of public body decisions. Master the three grounds (illegality, irrationality, procedural impropriety), standing, time limits and remedies.

Human Rights — how the ECHR is given effect in domestic law. Key areas include section 3 HRA interpretation, section 4 declarations of incompatibility, and section 6 public authority obligations.

Prerogative Powers — residual powers of the Crown. Which are justiciable? When can courts review their exercise? Questions test your understanding of the justiciability test.

Devolution — reserved versus devolved matters, legislative competence, the Sewel Convention. Questions may test whether Parliament can legislate on devolved matters (yes, despite Sewel) and whether devolved legislation exceeds competence (ultra vires).

Key Principles for SQE1

Use a structured approach: identify the issue, apply the correct rule, and choose the best answer based on the facts.

How This Appears in SQE1 Questions

Constitutional & Administrative Law is assessed as part of FLK1. Questions use the single-best-answer format with five options (A–E). Virtually all questions are scenario-based. This is one of the most commonly tested areas in SQE1.

You will be given a factual situation involving a public body, a government decision, or a question about the powers of a particular institution. You are asked to identify:

The correct legal position
Which principle or ground is engaged
The most appropriate remedy or outcome

The examiners frequently test:

Whether you can distinguish between similar constitutional principles (e.g., parliamentary sovereignty vs rule of law)
Whether you understand that conventions are not legally enforceable
Whether you can identify the correct ground for judicial review
Whether you understand when courts can and cannot intervene

Common distractors:

Answers that are technically accurate but do not answer the specific question
Answers that overstated the scope of judicial review (e.g., courts can strike down Acts of Parliament)
Answers that confuse conventions with legal rules

Careful, precise reading is essential. Many candidates lose marks not because they lack knowledge but because they select an answer that addresses the wrong aspect of the scenario or assumes facts not stated in the question.

Why Constitutional & Administrative Law Matters for SQE1

The UK has no single written constitution. Instead, the constitutional framework derives from a mix of statutes (Acts of Parliament), common law, constitutional conventions, and authoritative texts. This means:

Rules often depend on convention, constitutional principle and case law rather than a single codified statute
You must understand principles (not just memorise case names)
The exam tests your ability to apply these principles to new, unfamiliar scenarios, particularly the distinction between parliamentary sovereignty and other core principles
Many candidates find this subject conceptually demanding because the rules are distributed across multiple sources, from statutory interpretation to case law precedent

The good news: SQE1 rewards systematic understanding of core principles. Master those, and most scenarios become manageable.

How to Revise Constitutional & Administrative Law Effectively

1. Build a Clear Mental Map

Start by understanding how Parliament, the executive and the judiciary relate to each other and where the boundaries lie. This will help you navigate most questions.

2. Focus on Principles Over Case Names

You should know the significance of cases such as Entick v Carrington, GCHQ, Factortame, R (Miller) and Thoburn v Sunderland, but the exam rewards your ability to apply the underlying principle to new facts rather than to recall lengthy judgments.

3. Master Judicial Review

This is the highest-yield area. Practice identifying the correct ground of challenge (illegality, irrationality or procedural impropriety). Work through scenarios and ask yourself: is this a case of exceeding power (illegality), acting unreasonably (irrationality) or failing to follow proper procedures (procedural impropriety)?

4. Understand the Distinctions

Law vs convention: conventions are not legally enforceable; courts recognise them but will not enforce them
Reserved vs devolved: matters reserved to Westminster cannot be legislated on by devolved legislatures; others can be
Substantive vs procedural fairness: courts more readily require fair procedures (procedural legitimate expectation) than mandate particular outcomes (substantive legitimate expectation)
Absolute vs qualified rights: absolute rights cannot be restricted; qualified rights can be if the restriction is proportionate

5. Practice Realistic Questions

Practising SQE1-style MCQs regularly is the best way to improve. Work through scenarios and practise identifying the correct principle and applying it.

Key Cases to Know

You do not need to memorise all cases, but knowing these will strengthen your understanding:

Parliamentary Sovereignty: Pickin v British Railways Board [1974], Factortame [1991], Thoburn v Sunderland City Council [2002]
Judicial Review: Associated Picture Houses Ltd v Wednesbury Corporation [1948], CCSU v Minister for the Civil Service [1985], Anisminic Ltd v Foreign Compensation Commission [1969]
Human Rights: R (Pretty) v DPP [2001], S and Marper v UK (ECtHR) [2008], R (Begum) v Secretary of State for the Home Department [2021]
Prerogative Powers: Council of Civil Service Unions v Minister for the Civil Service [1985]
Legitimate Expectation: R (Uniplex (UK) Ltd) v Food Standards Agency [2002]
Devolution: R (Miller) v Secretary of State for Exiting the EU [2017]
Statutory Interpretation: R v Secretary of State for the Home Department, ex parte Pierson [1998]

Ready to Test Your Understanding?

Want to test this now? Try a few SQE1-style questions below before moving on.

Common Mistakes Students Make

Distinguishing constitutional conventions from legal rules: Conventions are politically binding but not legally enforceable. Many candidates struggle to determine whether a particular rule is a convention (such as the Salisbury Convention) or a legal rule that a court would enforce.

Identifying the correct ground for judicial review: The three grounds can overlap. Candidates often select a ground that is plausible but not the best fit for the facts described in the scenario.

Applying the Human Rights Act to scenarios: Understanding the difference between section 3 interpretation, section 4 declarations and section 6 obligations requires careful attention. Questions may test whether the body in question is a public authority for the purposes of the Act.

Navigating the uncodified constitution: Because the UK constitution is drawn from multiple sources, candidates sometimes find it difficult to identify where a particular rule comes from — and whether it is found in statute, case law or convention.

Confusing what courts can and cannot do: Courts cannot strike down Acts of Parliament or enforce conventions. Understanding these limits is essential. Courts can issue declarations of incompatibility (under HRA 1998) but cannot invalidate legislation.

Quick Summary

Parliamentary sovereignty is the foundational principle: Parliament can make or unmake any law, and no court can override an Act of Parliament.
The rule of law and separation of powers require government action to be lawful and require authority to be distributed among the three branches.
Conventions are politically binding but not legally enforceable — courts recognise them but will not enforce them.
Judicial review allows courts to supervise the legality of public body decisions on three grounds: illegality, irrationality and procedural impropriety.
The Human Rights Act 1998 incorporates ECHR rights into domestic law and requires courts to interpret legislation compatibly with those rights.