LAW1035 · Constitutional and Administrative Law

The Backbone of the British Constitution

A constitutional concordance mapping the recurring account of the United Kingdom's constitutional identity, institutions, principles, rights and relationships across Parliament, the Executive and the courts.

Teaching and research edition · September 2026

What is a constitutional concordance?

Each row begins with a constitutional proposition. The remaining columns identify where that proposition is recognised in legislation, official executive or parliamentary description, and judicial authority. The object is not merely to list constitutional materials, but to reveal the constitutional order which those materials collectively describe.

The central claim is modest but important: the British constitution is uncodified, but it is neither unreal nor institutionally undescribed. Across different organs of the state, a persistent account of its architecture can be identified.

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The Crown and the branches of government

The Crown The source of the three branches, not a fourth. The Crown in Parliament legislates; His Majesty's Government is the executive; the Crown dispenses justice in its courts. The King's own powers are reserve powers. Otherwise his powers are exercised on advice, and it is the advice the courts review: in Miller (No 2) the Queen was wrongly advised to prorogue. The Crown in Parliament The legislature: Crown, Lords and Commons together. An Act is the product of all three, save as the Parliament Acts provide. Checked by the electorate and its own procedure; and by the courts, through interpretation, through hard review under Article 2 of the Windsor Framework in rare cases, and non-bindingly under the Human Rights Act. His Majesty's Government The executive. Ministers act under statute, prerogative or common law. The prerogative cannot grow and yields to statute. Checked by Parliament through responsible government and by the courts through judicial review. The Crown's courts The judiciary. Declares the law and reviews the legality of public action: a function statute recognises and presupposes. Checked by parliamentary sovereignty, by appeal, and by the limits it sets on its own jurisdiction.

Showing all propositions.

Concordance of constitutional propositions and official authority
Strand Constitutional proposition Legislation / legal text Executive / parliamentary description Judicial authority Status and tension
Constitutional identity § The United Kingdom possesses a constitution. Its component rules appear across constitutional statutes, common law and legally recognised institutional arrangements. R (Miller) v Prime Minister [2019] UKSC 41, [39]–[40] A High concordance
The familiar claim that the UK “has no constitution” confuses absence of codification with absence of a constitution.
Constitutional identity § The constitution is uncodified, historically evolved and capable of further development. No single canonical instrument; development occurs through legislation, common law and constitutional practice. Miller (No 2) [2019] UKSC 41, [39] A High concordance
“Uncodified” is more accurate than “unwritten”: much of the constitution is written, but not consolidated in a superior constitutional text.
Institutions and authority § The UK is a parliamentary democracy under a constitutional monarchy, with an Executive drawn from and accountable to Parliament and an independent judiciary. Institutional elements are recognised across electoral law, the Constitutional Reform Act 2005 A and legislation governing Parliament and ministers. Cabinet Manual (2011), para 1 B Miller (No 2) [2019] UKSC 41, [41]–[48] A High concordance
The constitution is an institutional order, not merely a list of source-types.
Crown and branches § The Crown is the source of the three branches, not a fourth: the Crown in Parliament legislates, His Majesty's Government is the executive, and the Crown dispenses justice in its courts. The King's own powers are reserve powers; otherwise his powers are exercised on advice. Cabinet Manual (2011), para 6; ch 1 (The Sovereign) and ch 2 (Elections and government formation) B — the Sovereign's prerogative powers are exercised by or on the advice of ministers, save the reserve powers. R (Miller) v Prime Minister [2019] UKSC 41 A — the Prime Minister's advice to the Queen was unlawful, so the prorogation was void: the Sovereign was wrongly advised, and it is the advice, not the Sovereign, that the courts control. Moderate concordance
Description and case law agree that the Sovereign acts on advice; they diverge on who polices the advice. The 2022 Act revives the prerogative of dissolution and, in s 3, seeks to place its exercise beyond the courts.
Crown and branches § Parliament is bicameral and tripartite — the Crown, Lords and Commons; an Act is the product of all three save as the Parliament Acts provide; and each House governs its own proceedings. High, qualified by review
High concordance on what an Act is. But the Crown in Parliament is now controlled by the courts: through the principles of interpretation (legality; constitutional statutes), by hard review under Article 2 of the Windsor Framework in rare cases, and non-bindingly by declarations of incompatibility under the Human Rights Act. The Jackson obiter on whether sovereignty has limits remains contested.
Crown and branches § His Majesty's Government is the executive. Ministers act under statute, prerogative or common law; the prerogative cannot grow, yields to statute, and its limits are set by the courts.
  • Case of Proclamations (1611) 12 Co Rep 74; Entick v Carrington (1765) 19 St Tr 1029.
  • Attorney General v De Keyser's Royal Hotel Ltd [1920] AC 508; BBC v Johns [1965] Ch 32.
  • Council of Civil Service Unions v Minister for the Civil Service [1985] AC 374; R v Secretary of State for the Home Department, ex p Fire Brigades Union [1995] 2 AC 513.
  • Miller (No 1) [2017] UKSC 5 A; Miller (No 2) [2019] UKSC 41 A
 High concordance
The Cabinet Manual's account of the sources of ministerial power and the Supreme Court's account in the two Miller cases agree. The concordance is the finding.
Crown and branches § The Crown dispenses justice in its courts. The courts' authority to declare the law and to review the legality of public action is a constitutional function that statute recognises and, on the courts' account, presupposes. High, effects contested
Laws LJ at [98]: the limits of the jurisdiction "are (generally) set by itself" — the boundary between a place the jurisdiction cannot go and a place the court will not send it is, in his word, permeable.
Fundamental principles § The Crown in Parliament possesses supreme legislative authority. The principle is largely presupposed rather than exhaustively stated in a single statute. High concordance
Its existence is orthodox; its foundations, limits and relationship with the rule of law remain contested.
Fundamental principles § Representative government connects the exercise of public power to the electorate through a representative Parliament and periodic elections. High concordance
Representative government is not direct popular sovereignty: electoral legitimacy is mediated through Parliament. Referendums remain constitutionally exceptional unless legislation gives them legal effect.
Fundamental principles § Responsible government requires the Executive to derive authority through Parliament, retain Commons confidence and account to Parliament for its conduct. The principle is not contained in a single enactment. Statutory controls over taxation, supply, expenditure, reporting and scrutiny operate within a structure largely sustained by convention and parliamentary procedure. Miller (No 2) [2019] UKSC 41, [46] A treats parliamentary accountability—described through the constitutional principle of responsible government—as no less fundamental than parliamentary sovereignty. High concordance
The fusion of Executive and legislature makes accountability constitutionally essential but practically vulnerable to executive dominance, party discipline and the disabling of parliamentary scrutiny.
Fundamental principles § The rule of law is a pre-existing constitutional principle governing the exercise of public power. Constitutional Reform Act 2005, s 1 A expressly preserves “the existing constitutional principle of the rule of law”. Constitution Committee (2001): rule of law encompassing individual rights B High concordance
Content is multifaceted: legality, access to courts, equality before law and control of arbitrary power.
Fundamental principles § Judicial independence is both an institutional guarantee and a constitutional principle. Constitutional Reform Act 2005, s 3 A imposes duties to uphold continued judicial independence. Cabinet Manual (2011), para 16 B Reflected throughout the modern case law on the rule of law and separation of powers, including UNISON A. High concordance
Strong statutory reinforcement does not exhaust its constitutional content.
Relationships and accountability § The Executive–Parliament relationship operationalises responsible government through scrutiny, supply and ministerial accountability. Expressed through statutory reporting, supply and scrutiny arrangements, but resting substantially upon convention and parliamentary procedure. Cabinet Manual (2011), chs 2–5 B Miller (No 2) [2019] UKSC 41, [46] A: parliamentary accountability is no less fundamental than parliamentary sovereignty. High concordance
Sovereignty is functional only if Parliament remains capable of performing its scrutiny and legislative functions.
Relationships and accountability § Government holds office by commanding the confidence of the House of Commons, within a system of representative democracy and periodic elections. Election and dissolution rules provide the legal setting; the confidence principle remains predominantly conventional. Cabinet Manual (2011), chs 2–3 B Miller (No 2) [2019] UKSC 41, [45]–[47] A High concordance
Illustrates the connection between executive authority, parliamentary support and electoral legitimacy.
Rights, freedoms and equality § Fundamental rights and freedoms form part of the constitutional relationship between public power and the individual. Constitution Committee (2001) B defines the rule of law as encompassing the rights of the individual. High concordance
Rights are part of the architecture, not an external qualification bolted onto an otherwise institutional constitution.
Rights, freedoms and equality § The common law recognises constitutional rights independently of the Human Rights Act. Human Rights Act 1998, s 11 A preserves other domestic rights and freedoms. Official constitutional descriptions generally place judicial decisions and the rule of law among the constitution's sources and principles. High concordance
The scope and remedial force of particular common-law rights remain context-sensitive.
Rights, freedoms and equality § The ECHR and Human Rights Act create a distinctive domestic structure for securing Convention rights. Human Rights Act 1998 A: interpretation (s 3), declarations (s 4), public-authority unlawfulness (s 6), proceedings and remedies (ss 7–8). The HRA case law gives effect to Convention rights while maintaining the statutory distribution of functions between courts, Parliament and public authorities. High concordance
The HRA overlays rather than abolishes common-law rights. Parliamentary sovereignty is preserved through the s 4 model.
Rights, freedoms and equality § Convention rights also operate as limits upon devolved legislative and executive competence. Official accounts of devolution treat rights compliance as part of the distribution and limitation of devolved authority. High concordance
Unlike the ordinary HRA model for Westminster Acts, incompatible devolved legislation may be outside competence.
Rights, freedoms and equality § In Northern Ireland, rights are interlocked with the peace settlement, devolution and the UK's international obligations. UK Government, Windsor Framework materials B In re Dillon [2026] UKSC 15 A Strong but specialised
Article 2 is not freestanding incorporation of every EU or Charter right; the protected right, pre-Brexit EU underpinning and diminution must be established.
Institutions and authority § Devolution is a fundamental part of the constitution, and the UK is better understood as a union of nations than as a simply unitary state. Constitution Committee, Respect and Co-operation: Building a Stronger Union (2022) B Moderate concordance
Parliamentary sovereignty remains legally orthodox, while political and constitutional constraints profoundly affect its legitimate exercise.
Relationships and accountability § Constitutional conventions regulate the constitutionally proper use of legally available power. Some conventions receive statutory recognition—most prominently Sewel—without necessarily becoming judicially enforceable rules. Miller (No 1) [2017] UKSC 5, [136]–[151] A High concordance
A legally valid act may nevertheless be constitutionally improper. Sanction is ordinarily political rather than judicial.
Constitutional identity § The constitution has an external dimension formed by international obligations and, where Parliament provides, their domestic legal effect. Examples include the HRA 1998 and EU (Withdrawal Agreement) Act 2020; dualism otherwise governs treaty incorporation. Cabinet Manual (2011), paras 5 and 17–18 B include European and international law in the account of constitutional sources. Miller (No 1) [2017] UKSC 5 A restates the domestic constitutional rules governing treaties and prerogative power. Moderate concordance
International obligation and domestic enforceability must be kept analytically distinct.

What the concordance reveals

The sources converge on a constitution made up not only of legal materials but of institutions, principles and structured relationships of authority and accountability.

Materials

Statute, common law, prerogative, convention, constitutional practice and authoritative exposition supply the constitution's materials.

Architecture

Crown, Parliament, Executive, courts, devolved institutions and electorate form its institutional structure.

Relationships

Representative and responsible government, sovereignty, legality, confidence, accountability, rights and judicial independence govern how constitutional authority is exercised.

Rights are a constitutional strand in their own right

The rights dimension is plural rather than unitary. Its layers overlap, but they have different sources, institutional functions and remedies.

Common lawFundamental rights and the principle of legality.
ECHR and HRAConvention rights given a distinctive domestic statutory structure.
DevolutionRights compliance as a limit upon legislative and executive competence.
Northern IrelandBelfast Agreement, Northern Ireland Act and Article 2 of the Windsor Framework.

Core official sources

These sources provide the principal documentary route into the concordance.

Executive and parliamentary descriptions
Key constitutional legislation
Leading judicial statements
Northern Ireland rights settlement

Printed from the LAW1035 constitutional concordance, September 2026.