This article discusses the defence of contributory negligence and Electronic Commerce Regulations in Commercial Law. It explains the requirements and implications of these regulations for service providers and online retailers. The article covers the key themes behind contributory negligence, the burden of proof, and the impact of small mistakes on damages. It also discusses the Electronic Commerce (EC Directive) Regulations, 2002, which dictate the information that must be provided to consumers during online transactions. The article explains the applicability of these regulations and the exceptions to the country of origin principle. It also covers the minimum information that service providers must provide to consumers.