This report provides a comprehensive analysis of various company types, starting with an introduction to the business concept and the specific case of Tesco PLC. The first section differentiates between micro, small, medium, and large businesses, outlining their definitions, characteristics, and examples. The second section delves into different legal structures, comparing sole traders, partnerships, limited liability businesses, public liability businesses, and cooperatives. Furthermore, the report includes an external analysis of Tesco PLC using the PESTLE framework, examining political, economic, social, technological, legal, and environmental factors. An internal analysis, employing VRIO and SWOT analyses, evaluates Tesco's resources, capabilities, strengths, weaknesses, opportunities, and threats. The conclusion summarizes the key findings and insights derived from the analysis. References are provided to support the information presented.