
The British constitution is one of the oldest in the world, dating back over a thousand years, and is the source of modern concepts such as the rule of law, parliamentary sovereignty, and judicial independence. Unlike most countries, the UK constitution is uncodified, meaning there is no single document that contains its core aspects. Instead, the constitution is spread across various sources, including Acts of Parliament, court cases, and conventions. These sources encompass both formal laws and less formal documents without legal force, such as authoritative works and conventions or unwritten rules. The flexibility of the uncodified constitution allows for easy amendments and changes, reflecting the UK's capacity to absorb change and its stable governing institutions.
| Characteristics | Values |
|---|---|
| Uncodified | No single legal source |
| Flexible | Easily changed |
| Traditionally unitary, now a union state | United Kingdom of Great Britain and Northern Ireland |
| Monarchical | Constitutional monarchy |
| Parliamentary | Parliamentary sovereignty |
| Based on constitutional doctrines and principles | Rule of law, separation of powers, parliamentary sovereignty |
| Sources | Acts of Parliament, court cases, conventions, authoritative works, treaties, statute law, common law |
| Landmark statutes | Magna Carta, Bill of Rights (1689), Human Rights Act (1998) |
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Acts of Parliament
Statute law encompasses a range of topics, including the devolution settlements, the right to vote and the holding of elections, the upholding of human rights, the prohibition of discrimination, and the establishment of the Supreme Court. Some Acts of Parliament are considered to have special constitutional status, such as the Magna Carta, which dates back to 1215, and the Bill of Rights of 1689.
Other notable examples of Acts of Parliament with constitutional significance include the Parliament Acts of 1911-1949, which regulate the powers of the two Houses of Parliament, the Human Rights Act of 1998, and the Representation of the People Act of 1918, which extended voting rights to certain women and all men.
While Acts of Parliament form a crucial part of the British constitution, it is challenging to distinguish them from regular laws that deal with policy areas. This is due to the uncodified nature of the British constitution, which means there is no single document or clear concept of a 'higher law' that distinguishes constitutional law from regular law.
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Court cases
One notable example of the influence of court cases on the British constitution is the Factortame case of 1991. In this case, the European Court of Justice ruled that European Law took precedence over UK statute law. The case concerned the ownership requirements for fishing boats in the UK, which conflicted with EU law promoting free movement of goods and freedom to provide services. The outcome of this case demonstrated the ability of court decisions to shape the constitution by influencing the relationship between European Law and UK statute law.
Another significant aspect of court cases in the British constitution is the recognition and enforcement of constitutional principles by the judiciary. The Supreme Court of the United Kingdom and its predecessor, the Appellate Committee of the House of Lords, have played pivotal roles in affirming principles such as parliamentary sovereignty, the rule of law, democracy, and adherence to international law.
In addition to shaping the constitution through common law and judicial precedent, court cases also provide a mechanism for interpreting and upholding the rights enshrined within it. For instance, the Human Rights Act of 1998 marked a significant shift in the relationship between individuals and the state, as well as between the courts and political branches of government. This Act has been subject to extensive judicial interpretation, influencing the constitutional landscape.
Furthermore, court cases can address the lawfulness of decisions made by public bodies. Claimants can challenge the decisions of public bodies on several grounds, including abuse of power, violation of legitimate expectations, failure to exercise independent judgement, bias or conflict of interest, denial of a fair hearing, and infringement of human rights. The remedies available in such cases may include declaring the public body's decision void or mandating specific actions to ensure compliance with constitutional principles.
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Conventions
The British constitution is one of the oldest constitutional systems in the world, dating back over a thousand years. It is characterised by the stability of its governing institutions, its capacity to absorb change, a bicameral legislature, and the concept of responsible government. Unlike in most countries, no official attempt has been made to codify the arrangements of the British constitution into a single document, thus it is known as an uncodified constitution. This means that the constitution can be easily changed as no provisions are formally entrenched.
Some key examples of conventions include the expectation that the Prime Minister should be a member of the House of Commons and be able to command the confidence of that institution. This convention ensures that the Prime Minister has the support of the elected representatives in the House of Commons and can effectively govern with their backing. Another convention is the granting of Royal Assent by the monarch to each bill passed by Parliament. While the monarch has the theoretical power to deny Royal Assent, it is a longstanding convention that they approve all bills passed by Parliament, respecting the will of the democratically elected body.
The appointment of the Prime Minister is also governed by convention. Typically, the monarch appoints the leader of the largest party in the House of Commons as the Prime Minister. This convention reflects the democratic outcome of the elections and ensures that the government is formed by the party with the most support. Additionally, the convention of collective responsibility dictates that all government ministers openly support all government policies. This promotes unity and cohesion within the government, ensuring that ministers present a united front, even if they may have internal disagreements.
While conventions are not legally binding, they are deeply entrenched in the British political system and are widely respected. They provide guidelines for the functioning of the constitution and contribute to the stability and adaptability that characterise the British system of government.
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Common law
The British constitution is one of the oldest in the world, dating back over a millennium. It is also one of the few constitutions that are uncodified, meaning there is no single legal source or document that contains its core aspects. Instead, the constitution is spread across various sources, including both formal laws and informal conventions, which can make it challenging to decipher.
One of the main sources of the British constitution is common law. Common law refers to 'judge-made law', which is based on precedent and tradition. Judges decide on the legality of a case by referring to previous decisions on similar cases. This means that common law is derived from custom and precedent, with judges declaring what the law is and thereby creating it. While the courts interpret the rules, judges can also establish them, shaping important features of the constitution such as individual rights and the limitations on public authorities.
The flexibility of the uncodified constitution means that it can be easily changed, as no provisions are formally entrenched. This allows for the constitution to be amended whenever a law is made on a constitutionally significant topic. However, this also means that there is no clear distinction between constitutional law and regular law, and no special procedures for changing the constitution.
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Authoritative works
The British constitution is unique in that its core aspects are spread across several documents and sources, including authoritative works, which have influenced the interpretation and perception of the constitution.
Another influential figure is the legal scholar Albert Venn Dicey, whose views underpinned the doctrine of "parliamentary sovereignty". Dicey's interpretations, formed in the late nineteenth and early twentieth centuries, continue to be relevant today, even if their original source has been forgotten by some.
The works of these authors, and others like them, contribute to the body of authoritative literature that helps to guide understanding of the UK constitution. While the UK constitution may lack a single, unified source, these authoritative works help to make sense of the system and its various components.
Additionally, the UK constitution has been a subject of academic interest, with collections of essays and studies examining its current state and prospects for evolution. For instance, "British Constitution: Continuity and Change" is an anthology of essays by constitutional scholars, political scientists, and legal practitioners, offering insights into the UK's constitutional architecture.
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Frequently asked questions
The British Constitution has three main sources: Acts of Parliament, court cases, and conventions.
Acts of Parliament are a major source of the British Constitution. Examples include the European Community Act of 1972, the Human Rights Act of 1998, and the 2005 Constitutional Reform Act.
Court cases are another important source of the British Constitution. This includes landmark statutes such as the Bill of Rights of 1689, as well as the decisions and precedents set by judges in common law.
Conventions are the customs and practices that govern the functioning of the British Constitution. They can be hard to define precisely and lack legal force, but they are the source of important features of the UK system of government, such as the convention that the Prime Minister should be a member of the House of Commons.
Yes, the British Constitution also includes authoritative works, treaties, and international law.

























