This chapter provides an overview of the work’s contents. It introduces the basic ideas of company law. A company is an artificial legal person capable of owning property, being a party to contracts and being a claimant or defendant in legal proceedings. A company is created by registration at Companies House under the Companies Act 2006. A company is both an association of members (shareholders) and a person separate from its members. Members are not liable for the company’s debts. Members are only liable to make an agreed capital contribution in return for their shares. Members appoint directors to manage the company’s business and represent the company. Every company must have articles of association which set out the company’s constitution.