This chapter focuses on the sources of law in England & Wales, and is organised as follows. Section 2.1 describes the key jurisdictions relevant to lawyers in England and Wales. Section 2.2 deals with the issue of where the law comes from: sources of law. Section 2.3 reviews the development of the two ‘traditional’ sources of law in England and Wales: case law and statutes. Sections 2.4 and 2.5 consider the status and operation of EU and international law, including the potential effect of Brexit. Section 2.7 goes on to discuss public and private law, common law, and civil law, and other classifications used by lawyers. This is followed by a discussion of legal systems and their cultures across the world.