This report explores different types of businesses based on size and incorporation, organizational structures and their impact on business productivity, and how external factors affect business performance. It includes examples and characteristics of micro, small, medium, and large businesses, sole trader business, partnership, limited liability business, public limited liability business, and cooperatives. The report also discusses the PESTLE analysis of political, economic, social, technological, legal, and environmental factors on business operations, using Marks & Spencer as a case study.