Common law
- judicial practice plays a significant role
- court decisions establish precedents
- ensures flexibility in legal regulation and predictability in the application of the law
The UK lacks a single written constitution and the classic, rigid hierarchy of legal acts found in civil law (continental) jurisdictions. Its legal system rests on the principle of parliamentary sovereignty: as the country’s supreme legislative body holding ultimate authority, Parliament may enact or repeal any law, and no court has the power to declare an Act of Parliament unconstitutional.
Nevertheless, a hierarchy of sources of law does exist and is structured as follows (from highest to lowest):
| Source of law | Description |
| Statute law (Acts of Parliament) | Laws (statutes) enacted by Parliament are supreme. They can overrule any case law or custom.
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| Subordinate legislation | Acts adopted by the executive branch (government, ministers, Privy Council) or local authorities.
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| Judicial precedent (common law and equity) | The historical foundation of Anglo-Saxon law. Precedents are established by decisions of higher courts and are binding on lower courts (stare decisis principle). There is also a hierarchy within this category:
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| Constitutional conventions | Unwritten rules of political behaviour that govern the functioning of the state (for example, the monarch’s obligation to always sign acts passed by Parliament). They are not directly enforceable by the courts but are strictly observed by all branches of government. |
| Customs | Ancient, local, or professional customs that have been in effect ‘since time immemorial’. They carry the least legal weight and apply only in the absence of a governing statute or precedent. |
Judicial practice and judicial precedent form the foundation of the legal system in the United Kingdom (specifically in England and Wales), constituting what is known as ‘common law’. Consequently, in the English legal system, court rulings on specific cases serve as a fully-fledged source of law rather than merely an act of applying existing rules. Judges do not merely interpret statutes; they also formulate new legal norms in areas where legislation is silent.
The stare decisis principle requires courts to adhere to legal positions established by higher courts in similar cases. Within the hierarchy of precedents, decisions made by the Supreme Court – the UK’s highest judicial authority – are binding on all other courts.
While precedent has historically been dominant, the role of written law (statutory law) is steadily increasing today, even though the final interpretation remains the prerogative of the courts.
There is no single judicial system in the United Kingdom; the country operates under three separate legal jurisdictions – England and Wales, Scotland, and Northern Ireland – which are united by a common highest court.
The Supreme Court is the highest judicial authority for all civil and criminal cases (though for Scotland, it hears only civil cases). Scotland has its own system. The structure in Northern Ireland is similar to that of England.
| Supreme Court of the United Kingdom | ||
| England and Wales | Northern Ireland | Scotland |
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Senior courts |
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Court of Judicature consists of three key superior courts: |
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Court of Appeal hears appeals in civil cases from the High Court and in criminal cases from the Crown Court |
Court of Session – supreme civil court, consisting of two chambers:
High Court of Justiciary – supreme criminal court; it hears the most serious criminal cases and appeals against the verdicts and decisions of lower courts. |
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| High Court of Justice | High Court | |
handles major civil cases and consists of three divisions:
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Crown Court tries serious criminal cases involving a jury |
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Intermediate courts |
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| Sheriff Appeal Court
hears appeals in civil and less serious criminal cases from sheriff courts and justice of the peace courts |
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Lower / inferior courts |
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| County Courts
hear routine civil claims (debts, tenancy disputes). Magistrates’ Courts hear the majority of minor criminal cases, presided over by justices of the peace or district judges
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County Courts
hear a wide range of civil claims (contractual and property disputes) and criminal appeals from Magistrates’ Courts Magistrates’ Courts hear the majority of minor criminal cases |
Sheriff Courts
courts of first instance of general jurisdiction Justice of the Peace Courts try minor offences |
The UK has several reputable arbitration institutions and centres, administering domestic and international disputes.
One of the oldest and most popular institutions in the world, specialising in major commercial disputes.
A global leader in dispute resolution within the sectors of commercial shipping, shipbuilding, and chartering.
Administers specialised disputes in the agricultural trade sector.
Handles global disputes in the trade of oilseeds and fats.
A professional body that does not itself administer disputes but trains and certifies arbitrators and appoints them upon request.
The key piece of legislation governing company operations in the UK is the Companies Act 2006. For limited liability partnerships, the corresponding legislation is the Limited Liability Partnerships Act 2000. Both acts establish the legal framework for the formation, management, and administration of the respective legal entities and set out requirements for the parties in the structure, such as directors and shareholders (or partners); they also regulate maintenance and keeping of corporate records, the preparation and filing of annual accounts, and procedures for dissolution and liquidation.
The UK combines tax rates that are moderate by global standards with a well-developed system of incentives (for investments, R&D, innovation, and holding structures) and is considered one of the most sophisticated and convenient onshore jurisdictions for transparent international business and structuring
Audit activity in the UK is primarily regulated by the Companies Act 2006 (covering statutory audits, company obligations, and auditor qualifications and appointments) and the Statutory Auditors and Third Country Auditors Regulations 2016 (which initially implemented EU rules regarding oversight and technical standards and were subsequently adapted following Brexit).
UK intellectual property (IP) law provides robust protection for trademarks, patents, industrial designs, and copyright through clear registration procedures and effective enforcement. Key legislative acts in this area include:
These laws provide rights holders with effective mechanisms for protecting their rights, including the ability to register IP assets, prevent unauthorised use, and seek judicial protection.
The competent authority for the registration and protection of IP rights is the Intellectual Property Office. It maintains official registers and facilitates the electronic filing of IP rights applications.
UK Government
King of the United Kingdom
HM Revenue & Customs
Companies House
Intellectual Property Office
The Gazette
Bar Council
Department for Business & Trade
Ministry of Justice
Scotland Office
HM Land Registry
Supreme Court of the United Kingdom
Bank of England
British Council