The EU is active in attempting to harmonize the law of product liability and the sale of goods to consumers, with the aim of promoting fair competition, aiding the internal market, and protecting consumers. But how do the resulting laws relate to existing national laws of liability and compensation? This comparative work considers the French and English laws governing all those who may be liable for products: their producers, their suppliers, their users, and their regulators. It is a revealing case study in the harmonization of laws in Europe, in an area which cuts across the traditional boundaries of private law, public law, and criminal law.