The meaning therefore depends on the context. A criminal case may be decided in a civil court if that court is a secular rather than a religious court, or if it is a court of a continental legal system such as that of the France. But a civilian court in the first sense, such as the Chancery Division of the High Court, will not hold trials for murder; Instead, such a case would be heard by a criminal court, for example.dem Crown Court. The precedents (aka: jurisprudence or judicial law) are based on the doctrine of stare decisive and are mainly associated with jurisdictions based on English common law, but the concept has been partially adopted by civil law systems. The precedents are the accumulated legal principles derived from centuries of decisions. Judges` judgments in important cases are recorded and become an important source of law. If there is no legislation on a particular issue that arises under changing conditions, judges rely on their own sense of right and wrong and decide disputes from scratch. The relevant precedents become a guide in subsequent cases of a similar nature. The English Law Dictionary defines precedent as a judgment or decision of a court cited as an authority to decide a similar question in the same manner or according to the same principle or by analogy. Another definition explains a precedent as „a decision of a court cited in support of a proposal for which it wishes to fight.” According to Montesquieu`s theory of the „separation of powers”, only parliament has legislative power; However, in cases where a law is ambiguous, the courts have the exclusive power to determine its true meaning on the basis of the principles of statutory interpretation. Since the courts do not have the power to legislate, the „legal fiction” is that they „explain” the common law (rather than „create” it). The House of Lords maintained this „declaratory power” in DPP v.
Shaw, where Viscount Simonds, in creating the new crime of „conspiracy to corrupt public morals,” asserted that the court had a „residual power to protect the moral welfare of the state.”   As Parliament established itself and exercised more and more influence, parliamentary legislation gradually overtook judicial legislation, so that today`s judges can only innovate in certain very narrowly defined areas. Legislation is the most important source of law. and consists of the declaration of legislation by a competent authority. Legislation can have many purposes: to regulate, approve, allow, prohibit, provide funds, sanction, grant, declare or restrict. A parliamentary legislature formulates new laws, such as Acts of Parliament, and amends or repeals old laws. The legislator may delegate legislative powers to subordinate bodies. In the United Kingdom, these delegated acts include statutory instruments, orders in council and regulations. Delegated legislation may be challenged for procedural irregularities; And legislators generally have the right to withdraw delegated powers when they deem it appropriate. Common law is a term with historical origins in the legal system of England. It refers mainly to the law made by judges, which has developed since the early Middle Ages, as described in a work published in the late 19th century The History of English Law before the Time of Edward I, in which Pollock and Maitland expanded the work of Coke (17th century) and Blackstone (18th century). In particular, the law developed in the English Court of Common Pleas and other common law courts, which also became the law of the colonies established first under the Crown of England or later in the United Kingdom in North America and elsewhere; and this law was developed after these courts were reorganized in England by the laws of the Supreme Court of Justice passed in the 1870s, and developed independently in the legal systems of the United States and other jurisdictions after their independence from the United Kingdom before and after the 1870s. The term is used secondarily to refer to the law developed by these courts in the same periods (pre-colonial, colonial and post-colonial), as opposed to the jurisdiction or previous jurisdiction of other courts in England: the Court of Chancery, the Ecclesiastical Courts and the Court of Admiralty.
The United Kingdom of Great Britain and Northern Ireland comprises three jurisdictions: England and Wales, Scotland and Northern Ireland. Although Scotland and Northern Ireland are part of the United Kingdom and share the Westminster Parliament as the main legislature, they have separate legal systems. Scotland became part of the United Kingdom more than 300 years ago, but Scots law has been remarkably different from English law.