
The United Kingdom is often said to have an 'unwritten' constitution, but this is not entirely accurate. While the UK does not have a 'written' or 'codified' constitution in the form of a single document, its constitution is largely written and can be found in various places, including specific Acts of Parliament, certain understandings of how the system should operate (constitutional conventions), and judicial decisions. The UK's constitution is one of the oldest in the world, dating back over a thousand years, and its uncodified nature has resulted in debates about whether it should be written down and codified.
| Characteristics | Values |
|---|---|
| Written or unwritten | The UK constitution is often said to be unwritten, but this is not strictly true. It is largely written, but in different documents. |
| Single document | The UK does not have a single constitutional document. It is spread across various places, including specific Acts of Parliament, understandings of how the system should operate (constitutional conventions), and judicial decisions. |
| Historical context | The UK did not experience a revolution or political rupture in the 18th or 19th centuries, when written constitutions were most popular. |
| "Higher law" | Unlike the US, the UK system has no clear concept of a "higher law". There is no distinction between constitutional law and regular law, and no special procedures for changing the constitution. |
| Parliamentary sovereignty | Parliamentary sovereignty is commonly regarded as the defining principle of the British Constitution. However, some argue that this has led to an excessively powerful government that is not legally constrained by fundamental rights. |
| Advantages of uncodified constitution | The flexibility of an uncodified constitution has enabled changes such as the removal of hereditary peers from the House of Lords, the introduction of the Human Rights Act, and devolution to Scotland, Wales, and Northern Ireland. |
| Disadvantages of uncodified constitution | An uncodified constitution is harder to understand and can be more easily amended than a codified one. |
| Need for a written constitution | Some argue that a written constitution would impose limits on what Parliament could do and better protect fundamental rights. |
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What You'll Learn
- The UK constitution is largely written, but in different documents
- The UK constitution is spread across Acts of Parliament, conventions, and judicial decisions
- The UK constitution is different from most countries as it does not have a single legal source
- The UK constitution is flexible and can be amended by a simple majority in Parliament
- The UK constitution is based on the rule of law, parliamentary sovereignty, and judicial independence

The UK constitution is largely written, but in different documents
The UK is often said to have an 'unwritten' constitution, but this is not entirely accurate. While the UK does not have a 'written' or 'codified' constitution in the traditional sense, it does have a constitution that is spread across various documents and sources. This unique feature of the UK constitution makes it different from most other countries, which typically have a single, codified constitution.
The UK's constitution can be found in leading statutes, conventions, judicial decisions, and treaties. Examples of constitutional statutes include the Bill of Rights 1689, the Acts of Union 1707 and 1800, the Act of Settlement 1701, the Parliament Acts 1911 and 1949, the Human Rights Act 1998, and various Acts specific to Scotland, Northern Ireland, and Wales. These Acts of Parliament form a major source for aspects of the UK constitution, providing for devolution settlements, the right to vote, the holding of elections, the upholding of human rights, the prohibition of discrimination, and the existence of the Supreme Court, among other things.
In addition to these formal legal documents, the UK constitution also includes certain understandings of how the system should operate, known as constitutional conventions. These conventions are not written down in any single document but are widely accepted and followed. Examples include the monarch acting on ministerial advice, the Prime Minister sitting in the House of Commons, and the Queen appointing as Prime Minister the person most likely to command the confidence of the House of Commons. These conventions have been codified in documents such as the Cabinet Manual.
The UK's constitution also includes various decisions made by judges that help determine how the system works. These judicial decisions can interpret and apply the law, as well as develop new principles. For example, the UK Supreme Court has made significant constitutional judgments, such as in the Miller/Cherry case in 2019.
While the UK constitution is largely written, it has never been codified into a single document. This is partly due to the country's stable political history, without major ruptures or revolutions that typically prompt the creation of written constitutions. The UK's constitution has instead evolved organically over time, adapting to political, economic, and social changes. This flexibility has allowed for significant reforms and the introduction of new laws, such as the Human Rights Act and devolution.
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The UK constitution is spread across Acts of Parliament, conventions, and judicial decisions
The UK constitution is spread across several places, including specific Acts of Parliament, constitutional conventions, and judicial decisions. This dispersal makes it more challenging to identify and comprehend.
The Acts of Parliament are pieces of primary legislation enacted by the UK Parliament, covering areas such as devolution settlements, the right to vote, the holding of elections, upholding human rights, prohibiting discrimination, and establishing the Supreme Court. These laws form a significant source for various aspects of the UK constitution. However, there is no clear distinction between constitutional laws and regular laws, making it challenging to differentiate them from policies related to education and transportation.
Constitutional conventions refer to the understandings of how the system should operate. While they lack legal force, they are essential sources of some of the most significant features of the UK's system of government. Examples include the monarch acting on ministerial advice, the Prime Minister sitting in the House of Commons, and the Queen appointing the Prime Minister based on their likelihood of commanding the confidence of the House of Commons.
Judicial decisions play a crucial role in shaping the UK constitution. The independence of the judiciary is a cornerstone of the constitution, safeguarding judges from dismissal. Judicial reviews hold executive power and public bodies accountable under the law, ensuring compliance with human rights obligations.
The UK constitution's uncodified nature sets it apart from most other countries, as it has never been brought together in a single document. This characteristic provides flexibility, enabling amendments without elaborate procedures. However, it also presents the challenge of a more complex understanding of the constitution.
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The UK constitution is different from most countries as it does not have a single legal source
The United Kingdom's constitution is unique when compared to most other modern liberal democracies. Unlike most countries, the UK does not have a 'written' or 'codified' constitution contained in a single document. Instead, it has an '"unwritten" constitution' spread across various sources, including specific Acts of Parliament, constitutional conventions, and judicial decisions. This dispersal can make it challenging to identify and understand.
The UK's constitution has evolved organically over time, adapting to political, economic, and social changes. It encompasses landmark statutes, such as the Bill of Rights of 1689, and unwritten rules or conventions, such as the residual powers of the monarch. The flexibility of an uncodified constitution has enabled significant reforms, including the Human Rights Act and devolution, which have transformed the constitutional order.
One of the main disadvantages of an uncodified constitution is its complexity and lack of clarity. It can be challenging to distinguish constitutional laws from regular laws, and there are no special procedures for amending the constitution. As a result, a 'constitutional statute' can be changed through a simple majority vote in Parliament, just like any other legislation. This lack of distinction between constitutional and regular law also reflects the absence of a clear concept of a 'higher law' in the UK system.
While some argue that a written constitution would impose limits on Parliament's power and better protect fundamental rights, others highlight the difficulties in agreeing on such a document and question the democratic benefits it would bring. The UK's constitution, though uncodified, is still regarded as a source of modern concepts such as the rule of law, parliamentary sovereignty, and judicial independence. Its adaptability has allowed for reforms and the removal of outdated elements, such as hereditary peers from the House of Lords.
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The UK constitution is flexible and can be amended by a simple majority in Parliament
The UK is often said to have an 'unwritten' constitution, but this is not entirely accurate. While the UK does not have a 'written' or 'codified' constitution in the traditional sense, it does have a constitution that is spread across various documents, including specific Acts of Parliament, constitutional conventions, and judicial decisions. The UK's constitution is flexible and can be amended by a simple majority in Parliament, unlike countries with codified constitutions that often have elaborate amendment procedures.
The UK's constitution has evolved organically over time, adapting to political, economic, and social changes. It encompasses landmark statutes, such as the Bill of Rights of 1689, the Acts of Union 1707 and 1800, the Act of Settlement 1701, the Parliament Acts 1911 and 1949, the Human Rights Act 1998, and various Acts for Scotland, Northern Ireland, and Wales. These Acts provide for devolution settlements, the right to vote and hold elections, the protection of human rights, the prohibition of discrimination, and the establishment of the Supreme Court, among other things.
The flexibility of the UK's uncodified constitution can be seen as an advantage. It has enabled significant changes such as the removal of hereditary peers from the House of Lords, the introduction of the Human Rights Act, devolution to Scotland, Wales, and Northern Ireland, and the creation of the Supreme Court. The UK constitution has multiple guardians, including the Supreme Court and the House of Lords, who interpret and uphold constitutional principles.
However, some argue that a written constitution is necessary to impose limits on Parliament's power and protect fundamental rights. The UK Parliament currently has no limit on its power other than extra-parliamentary action by the people or other sovereign states pursuant to treaties. The lack of a written constitution makes it challenging to distinguish constitutional laws from regular laws clearly. This flexibility can also be seen as a disadvantage, as it allows for easy amendments without the same level of procedural protection as in codified constitutions.
In conclusion, while the UK constitution is flexible and can be amended by a simple majority in Parliament, there are ongoing debates about the need for a written constitution to impose limits on parliamentary power and provide a clear framework for the country's governance.
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The UK constitution is based on the rule of law, parliamentary sovereignty, and judicial independence
The UK constitution is an uncodified constitution, meaning it is not bound by a single legal source. Instead, it is spread across various sources, including specific Acts of Parliament, understandings of how the system should operate (constitutional conventions), and judicial decisions. This makes the UK constitution unique compared to most other modern liberal democracies, which typically have a written constitution.
One of the core principles of the UK constitution is the rule of law, which states that every person and body, whether public or private, including the state, are subject to the law. This principle ensures that laws are not retrospective, are clear and predictable, apply equally to all, and provide fair procedures for enforcement. It also upholds human rights and international law. The rule of law is recognised as a "'constitutional principle'" in the Constitutional Reform Act 2005, which strengthened the independence of the judiciary.
Another fundamental principle of the UK constitution is parliamentary sovereignty, often regarded as its defining feature. Parliamentary sovereignty means that Parliament, as the democratically elected body, holds the ultimate law-making power in the UK. It can create or abolish any law, and its Acts are the supreme source of law. However, Parliament can limit its own power, as seen in the Human Rights Act, or devolve legislative power, as with the Scotland Act.
The independence of the judiciary is also crucial to the UK constitution. The judiciary, or the courts, are independent of both the executive and legislature. Judges in the UK are selected based on merit by the Judicial Appointments Commission and are not accountable to voters, ensuring their independence. They play a vital role in interpreting and applying the law and resolving disputes through a system of courts and tribunals.
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Frequently asked questions
The British Constitution is not codified, meaning it is not written down in a single document. However, it does exist in various written forms, including specific Acts of Parliament, certain understandings of how the system should operate (constitutional conventions), and judicial decisions.
The UK did not experience a revolution or political rupture in the 18th or 19th centuries, when written constitutions were most popular. There has been no major historical turning point, such as a revolution or defeat in war, that has caused the UK to codify its constitution.
This is a matter of debate. Some argue that a written constitution would impose limits on what Parliament could do and help distinguish constitutional law from regular law. Others argue that the UK's flexible, uncodified constitution allows for greater change and adaptation over time.

























