This article explores the different types of companies and business structures, including micro businesses, small businesses, medium businesses, and large businesses. It discusses the characteristics and examples of each type of company. It also explains the different business structures, such as sole trader businesses, partnerships, limited liability businesses, public limited liability businesses, and cooperatives. The article further examines the impact of organizational structure on business productivity and how external factors affect business performance through PESTLE analysis. The case study of Burberry is used to illustrate these concepts.