JTH
//Murder is carried out with 'malice aforethought'.....
I wonder if that was in Retrocop's (American) link?//
Well yes it was actually if you had taken the trouble to click on common law ( in italics) you would of read the following.
Common Law
The ancient law of England based upon societal customs and recognized and enforced by the judgments and decrees of the courts. The general body of statutes and case law that governed England and the American colonies prior to the American Revolution.
The principles and rules of action, embodied in case law rather than legislative enactments, applicable to the government and protection of persons and property that derive their authority from the community customs and traditions that evolved over the centuries as interpreted by judicial tribunals.
A designation used to denote the opposite of statutory, equitable, or civil, for example, a common-law action.
The common-law system prevails in England, the United States, and other countries colonized by England. It is distinct from the civil-law system, which predominates in Europe and in areas colonized by France and Spain. The common-law system is used in all the states of the United States except Louisiana, where French Civil Law combined with English Criminal Law to form a hybrid system. The common-law system is also used in Canada, except in the Province of Quebec, where the French civil-law system prevails.
Anglo-American common law traces its roots to the medieval idea that the law as handed down from the king's courts represented the common custom of the people. It evolved chiefly from three English Crown courts of the twelfth and thirteenth centuries: the Exchequer, the King's Bench, and the Common Pleas. These courts eventually assumed jurisdiction over disputes previously decided by local or manorial courts, such as baronial, admiral's (maritime), guild, and forest courts, whose jurisdiction was limited to specific geographic or subject matter areas. Equity courts, which were instituted to provide relief to litigants in cases where common-law relief was unavailable, also merged with common-law courts. This consolidation of jurisdiction over most legal disputes into several courts was the framework for the modern Anglo-American judicial system.Early common-law procedure was governed by a complex system of Pleading, under which only the offenses specified in authorized writs could be litigated. Complainants were required to satisfy all the specifications of a writ before they were allowed access to a common-law court. This system was replaced in England and in the United States during the mid-1800s. A streamlined, simplified form of pleading, known as Code Pleading or notice pleading, was instituted. Code pleading requires only a plain, factual statement of the dispute by the parties and leaves the determination of issues to the court.