The Constitution of the United Kingdom is an area of uncodified law, consisting of both written and unwritten sources. There is no technical difference between ordinary statutes and law considered "constitutional law". Therefore the Parliament of the United Kingdom can perform "constitutional reform" simply by passing Acts of Parliament and thus has the power to change or abolish any written or unwritten element of the constitution. The constitution is based on the concept of all sovereignty ultimately belonging to Parliament (Parliamentary sovereignty), so the concept of entrenchment cannot exist. The lack of a central written constitutional document explaining the fundamental principles of the state and relationship between its institutions and between the people leads some constitutionalists to regard the United Kingdom as having "no (formal) constitution". The phrase "unwritten constitution" is sometimes used, despite the fact that the UK constitution incorporates many written sources, statutory law being considered the most important source of the constitution. But the case remains that the constitution relies far more on unwritten constitutional conventions than virtually every other liberal democratic constitution.
Since there is neither entrenched constitutional law nor a formal separation of powers, Parliament has the ability to change any aspect of the constitution at will. The constitution is therefore often spoken of by political scientists as being "organic", that is, it has "evolved" over time since its medieval origins. In theory, its flexibility makes it responsive to political and social change, especially since many political principles are simply conventions; however, the absence of entrenchment means that in theory far-reaching changes could be made without significant popular support. Moreover, until recently, Acts of Parliament have not been subject to review by the courts.
For instance until recently there was no modern statute or document that attempted to codify the rights of citizens (e.g. freedom of speech) in the UK, common law precedents being the main source of "rights". Now, through the adoption of European Union law, and the European Convention on Human Rights, citizens are deemed to have certain negative rights that were previously unspecified in the legal system. These are enacted in the European Communities Act 1972 and Human Rights Act 1998, respectively. Constitutional reform has been particularly rapid in the past decade, and include the Human Rights Act; devolution of powers of government to Scotland, Wales and Northern Ireland; a significant reform of the House of Lords and a Freedom of Information Act.
Royal prerogative is the name for powers originally exercised by the monarch. They derived from the monarch's traditional authority, to use the Weberist term. In practice, by convention, most prerogatives are now directly exercised by ministers, such as the power to regulate the civil service, or the power to issue passports. Some absolute prerogatives (also known as the monarch's personal- or reserve prerogatives) still exist, but these are by convention exercised only on the advice of the Prime Minister and cabinet. These powers include summoning, proroguing and dissolving Parliament, granting royal assent to bills and formally appointing office holders. The most important reserve prerogative - also the most automatic under the current constitutional settlement - is considered to be the appointment and dismissal of Prime Ministers. The last time this reserve prerogative was exercised by the monarch without reference to the Cabinet was with the appointment of Harold Wilson in 1974, despite his party not having a majority in Parliament. Queen Elizabeth II exercised her prerogative after extensive consultation with the Privy Council. Royal prerogatives are often controversial, since they give the government great theoretical power. However, the Royal Prerogative is not unlimited; this was established in the Case of Proclamations (1611), which confirmed that no new prerogative can be created, and that Parliament can abolish individual prerogatives.
Another important principle is the concept of a unitary state, which is a corollary of Parliamentary sovereignty, and means that unlike in federal or confederal systems, sovereignty resides only at the centre of the state. The power of local and devolved bodies are totally dependent on Acts of Parliament, they could be abolished completely by Parliament if it wished so. Constitutional monarchy is a key principle, meaning that the monarch does not technically rule, he or she has a ceremonial role only. This principle traces from Restoration, and by the time Walter Bagehot wrote that the monarchy was the 'dignified parts' of the constitution, the modern situation had been established. However, this is tempered by the fact that parliament technically derives its authority from the Crown by the implicit consent of the monarch. The collective term for the legislative and governmental power of parliament is therefore the King (or Queen) in Parliament principle. This means that the monarch is often described as the "supreme guardian of the constitution", in that he or she could overturn an unconstitutional act of parliament by decree. This is extremely unlikely to happen, however; although the Crown, in theory, can govern by decree, such an act would enable parliament to force an Abdication under the power it established and proved during the Abdication Crisis of 1936, when Parliament forced King Edward VIII to abdicate. The monarch, therefore, has an established role to advise, warn and encourage ministers, although the Crown's executive powers remain unused.
The most recent major principle of the constitution is European Union membership, the principle that EU law takes precedence over UK law. This principle was famously identified in the Factortame case in which the Merchant Shipping Act 1988 was overturned. This appears to undermine the principle of Parliamentary sovereignty, but Parliament could still withdraw from the EU by repealing the European Communities Act 1972, so in a way Parliamentary sovereignty is preserved.
The current Labour government, elected in 1997, re-elected in 2001 and 2005 has made much constitutional reform, with some yet to come into effect. The incorporation of the European Convention on Human Rights into UK law has granted citizens specific negative rights and given the judiciary some power to enforce them. The courts can encourage Parliament to amend primary legislation that conflicts with the Act by a "declaration of incompatibility", and courts can refuse to enforce or "strike down" any incompatible secondary legislation. Any actions of government authorities that violate Convention rights are illegal, except if forced to by an Act of Parliament.
Recent reforms have also decentralised the UK by setting up devolved assemblies in Scotland, Wales, and Northern Ireland. Devolution has challenged the tradition of the UK being a centralised, unitary state, which indeed it never was since Scotland and Ireland (until 1801) always had separate governments or legal systems. Some commentators have stated the UK is now a "quasi-federal" state.
These reforms have undermined the concept of Parliamentary sovereignty somewhat, even though Parliament could still abolish the devolved assemblies and repeal the Human Rights Act. In reality such action is unlikely so these restrictions on the legislative power of Parliament are likely to remain on the statute book for the time being.
The passing of an unprecedented Freedom of Information Act has challenged the traditional British notion that governments should not disclose too many details of its operations.
The government has shown a desire to abolish the position of Lords Chancellor, a position which unusually combines executive, legislative and judicial power, in conflict with the notion of the separation of powers. This however has been defeated in the House of Lords. A further apparent breach of separation of powers, the presence of Law Lords (members of the judiciary) in the House of Lords will be removed by moving the Lords to the new Supreme Court of the United Kingdom by 2008. Ironically separation of power was a concept described by the French philosopher Montesquieu, after analysing the contemporary British constitution, which reflected the way in which the constitution actually operated. He didn't necessarily anticipate a separation of offices, but was rather describing the separation of functions.
Summary of Labour's proposed and implemented reforms:
Government of the United Kingdom | Politics of the United Kingdom | United Kingdom constitution
イギリスの憲法 | Britse Grondwet | Конституция Великобритании | Constituição do Reino Unido
Politics of the United Kingdom | United Kingdom constitution
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It uses material from the
"Constitution of the United Kingdom".
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