
The English common law system, also known as the common law of England and Wales, is a legal system that originated in the early Middle Ages in the King's Court (Curia Regis), a single royal court based in Westminster, London. It is a common law system, which means it is a body of law based on court decisions rather than codes or statutes. Common law is deeply rooted in stare decisis, a Latin term that means to stand by things decided, where courts follow precedents established by previous decisions. The English common law system has influenced the legal systems of many Commonwealth countries, as well as the United States, and is still in use today in England and Wales, alongside statutory legislation.
| Characteristics | Values |
|---|---|
| Origin | The English common law system originated in the early Middle Ages in the King’s Court (Curia Regis), a single royal court set up for most of the country at Westminster, near London. It was common to all the king's courts across England. |
| Timeframe | The common law of England was largely created in the period after the Norman Conquest of 1066. |
| Basis | Common law is a body of law based on court decisions (judicial decisions) rather than codes or statutes. |
| Legal Principle | Stare decisis, which means "to stand by things decided". It requires judges to follow precedents established by previous decisions. |
| Influence | English common law has influenced the legal systems in Wales, Ireland, the United States, and most Commonwealth countries. |
| Current Use | Common law systems are used in approximately one-third of the world's jurisdictions, either independently or integrated with civil law. |
| Flexibility | Common law is flexible and adaptable to changes in society. It can address situations not originally predicted by lawmakers. |
| Efficiency | Judges in common law systems only need to follow precedent, making court proceedings shorter and more efficient. |
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What You'll Learn

The influence of Roman law
The English common law system, also known as the common law system, is a legal system that originated in England and is now used in various countries around the world. It is based on the concept of judicial precedent, where decisions made by higher courts are binding on lower courts in future cases with similar facts. One of the most significant influences on the development of English common law was Roman law.
Roman law had a profound impact on the development of legal systems across Europe, including England. After the fall of the Roman Empire, its legal principles were compiled and codified in the Corpus Juris Civilis, also known as the Code of Justinian. This code, promulgated by Emperor Justinian I in the 6th century AD, consolidated and simplified existing Roman laws and became a foundation for legal systems in many countries.
The Code of Justinian played a particularly significant role in England during the Middle Ages. After the Norman Conquest in 1066, England underwent a period of legal development, and the concepts and institutions of Roman law were introduced by the Normans. The English legal system began to incorporate Roman law principles, especially in areas related to property law, contract law, and commercial law.
One of the key influences of Roman law on English common law was the concept of written laws and codes. While the common law system relies heavily on judicial precedent, the introduction of Roman law brought a stronger emphasis on written legal codes and statutes. This influenced the development of statutes and legislation in England, with acts of Parliament becoming an important source of law.
Additionally, Roman law introduced the idea of a more centralized and structured legal system. The English adopted the concept of a royal court system, with the monarch as the ultimate judicial authority, a model inspired by Roman law. Over time, this led to the establishment of a hierarchical court system, with lower courts and higher appellate courts, mirroring the structure and organization found in Roman law.
In conclusion, Roman law had a significant and lasting influence on the development of English common law. It introduced concepts of written legal codes, centralized court structures, and specific legal principles that continue to form the foundation of the English legal system and other common law jurisdictions today. The interplay between the common law and Roman law traditions has contributed to the richness and complexity of the English legal tradition.
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The Norman Conquest
The Conquest also resulted in the introduction of Anglo-Norman, a northern dialect of Old French, as the language of the ruling classes. This dialect influenced English, with Norman French words entering the language and French names gradually replacing Anglo-Saxon ones. Additionally, the Norman Conquest led to the elimination of slavery in England, which had largely disappeared by the middle of the 12th century.
The legal system of England, with its roots in the Norman Conquest, went on to influence the legal systems of its colonies, including the United States, Canada, Australia, New Zealand, and India, among others. This influence extended beyond the colonial era, with English common law continuing to shape the legal frameworks of many former colonies even today.
In summary, the Norman Conquest of 1066 had a profound and lasting impact on the development of the English common law system. It ushered in a period of centralisation, unification, and transformation, setting the stage for the evolution of a legal framework that would leave its mark not only on England but also on numerous other legal systems around the world.
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Judicial precedent
The English common law system, which originated in the early Middle Ages, is a body of customary law based on judicial decisions and precedents. It is a system that gives great weight to judicial precedent and the style of reasoning inherited from the English legal system. Judicial precedent, also known as stare decisis (Latin for "to stand by things decided"), is a fundamental principle in the English common law system.
Stare decisis dictates that courts follow precedents established by previous decisions. When similar cases arise, courts typically align their reasoning and rulings with the precedent set in previous decisions. This promotes stability and consistency in the legal system, as it provides a predictable framework for judges to follow. However, it is important to note that stare decisis is not absolute, and judges have the authority to depart from precedent in certain circumstances.
In the context of the English common law system, judicial precedent refers to the previous decisions of higher courts that serve as a model for future decisions. When a court interprets a statute or addresses a legal issue, it establishes a precedent that lower courts must follow when confronted with similar cases. This ensures uniformity and predictability in the application of the law.
The development of judicial precedent in the English common law system can be traced back to the King's Court (Curia Regis) in the early Middle Ages. Over time, the system evolved, and by the 19th century, English common law was primarily developed by judges rather than legislators. Judges played a crucial role in creating and shaping the law through their decisions and interpretations.
The influence of the English common law system and its emphasis on judicial precedent extended beyond England. Many former colonies, including the United States and Commonwealth countries, adopted this legal framework. The spread of the English common law system has contributed to the development of a common law jurisdiction, where judicial precedent and case law are given significant weight.
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Common law in former colonies
The common law system, which originated in England following the Norman Conquest in 1066, was spread to the British Isles, Wales, Ireland, and overseas colonies. Many former colonies, including the United States, Canada, Australia, New Zealand, and India, retain the common law system today, with some modifications.
Common law, also known as "judge-made law", is deeply rooted in stare decisis, where courts follow precedents established by previous decisions. Judicial precedent and the style of reasoning inherited from the English legal system are key features of common law. Approximately one-third of the world's population lives in common law jurisdictions or mixed legal systems that integrate common law and civil law.
In the context of former colonies, the transplantation of common law by the British to its colonial territories provided the institutional framework necessary for the subsequent achievement of strong development outcomes. However, there is diversity in modern rule-of-law indicators among former British colonies, suggesting that other dynamics of the colonial institutional environment may have influenced their legal systems.
For example, the degree of representation of the indigenous population in legislative bodies and the integration of indigenous and British common law courts and values played a role in shaping the legal systems of former colonies. Some colonies, like Quebec, South Africa, and Sri Lanka, retained their pre-existing civil law systems to respect the civil rights of local colonists.
Additionally, the influence of English common law in former colonies has evolved over time. In the United States, English law exerted influence over American common law for several decades after independence, but American common law gradually developed independently. Similarly, other jurisdictions, like Delaware, have sufficiently developed bodies of law that parties have no motivation to choose the law of a foreign jurisdiction.
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The role of judges
The English common law system, which originated in the early Middle Ages, is a body of customary law based on judicial decisions and precedents. It is a system that gives significant weight to stare decisis, which translates to "to stand by things decided". In practice, this means judges need to follow past decisions and rulings, also known as case law, when dealing with similar cases.
In the English common law system, judges are typically appointed or promoted based on their legal expertise, experience, and merit. They are expected to be impartial and objective in their decision-making, putting aside personal biases and considering only the facts of the case and the relevant laws. Judges are also responsible for interpreting the law and may use their discretion to fill in gaps or clarify ambiguous areas of the law. This interpretation of the law by judges is known as "judge-made law".
In a "case of first impression", where there is no clear legislative guidance or precedent, judges are empowered to establish new precedent. They may resolve the issue by applying statutory law, established principles, or reasoning from earlier decisions. This flexibility allows the common law system to adapt to changes in society and address unforeseen situations not originally predicted by lawmakers.
The decisions and rulings made by judges in the English common law system have a significant impact on shaping the law. Their interpretations and applications of the law contribute to the evolution of legal principles and the development of new areas of law. The precedent set by judges in their rulings becomes a binding source of law, influencing future court decisions and guiding the resolution of similar cases.
In summary, the role of judges in the English common law system is vital to the administration of justice and the development of the law. They are responsible for interpreting and applying the law, establishing precedent, and ensuring fairness and consistency in legal decision-making. The independence and expertise of judges are key to upholding the integrity and effectiveness of the English common law system.
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Frequently asked questions
The English common law system is a legal system that originated in England and is based on judicial decisions and precedents. It is known as a "common law" system because it was common to all the king's courts across England.
The English common law system originated in the early Middle Ages in the King's Court (Curia Regis), a single royal court set up for most of the country at Westminster, near London. It was developed in the centuries following the Norman Conquest in 1066, which reintroduced Roman and continental legal ideas to England.
One of the key principles of the English common law system is stare decisis, which means "to stand by things decided". This means that judges in common law systems rely on case law and legal precedent to guide their decisions, rather than codes or statutes.
The English common law system is different from civil law systems, which are prevalent in mainland Europe and are based on comprehensive codes and statutes. In contrast, common law systems are more flexible and adaptable to unforeseen situations, as they are based on precedents and case law.
The English common law system is used in England and Wales, and it has also influenced the legal systems in Ireland, the United States, and most Commonwealth countries. Many former colonies also retain the common law system today.


















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