This report provides a comprehensive overview of different types and forms of companies, including micro, small, medium, and large businesses, along with their characteristics. It analyzes various business structures, such as functional and divisional structures, and assesses how these structures impact business productivity. The report also examines various company forms, from sole traders to cooperatives and limited liability partnerships. Furthermore, it explores the influence of external factors on business operations using PESTEL analysis, covering political, economic, social, technological, environmental, and legal factors. The report uses Tesco as a case study to illustrate the concepts discussed, offering insights into how these factors affect business performance and decision-making.