Common law refers to law developed by judges through decisions in individual cases, also known as case law. This body of law is derived from judicial precedents rather than statutes or written legislation. Although statutes are increasingly used, the UK remains a common law jurisdiction where judicial decisions play a significant role in shaping the law. 

Key Point: Understanding the common law is fundamental to grasping the role of judicial decisions and precedents in the English legal system, highlighting the dynamic nature of law as interpreted and applied by the judiciary.