This report examines various aspects of business practices, beginning with definitions and characteristics of micro, small, and large businesses, and then delves into the different types of business structures including sole proprietorships, partnerships, limited liability firms, and cooperatives. The report also explores different organizational structures, such as functional, divisional, and matrix structures, highlighting their advantages and disadvantages. Furthermore, it includes an external analysis using the PESTLE framework, focusing on Sainsbury, examining political, economic, social, technological, legal, and environmental factors that impact the company. The conclusion summarizes the key findings, emphasizing the influence of external factors like Brexit and economic conditions on business operations, and the importance of adapting to consumer needs and technological advancements. The report, available on Desklib, provides valuable insights into business management and strategic analysis.