Tribal Saxon (later got together and called themselves. Anglo-Saxon) in early Anglo-Saxon around AD 1066 winner has occupied the British Isles. William is the one which is the Norman declared forfeited land in Britain is all his. Then divide the feudal lords, each loyal following. This is called the "Feudalism" the individual tribes of Britain at that time had their own local tradition. The trial began at the local level by the judge to Salhlwg. (Centered on the city of London called Westminster) were delivered to the Judicial circulating locally. Salhlwg attempt to revise the law to neutralize the so-called Common Law is applicable everywhere. And take matters customary to include it as a land trust or abuse of the trial judge to take the rules of customary law that is already adapted to the case occurred. The court shall have the authority to use discretion in adjusting to the fact that a fair trial. The judgment of the Court of Common Law system, it is the norm to judge other people. To be used as a model And valuable as law. The saying "The judges are creating law" (Judge Made Law).