This report, prepared for the BMP3002 Business in Practice module, analyzes various types and sizes of businesses, including micro, small, medium, and large enterprises, detailing their characteristics and providing relevant examples. It further explores different legal structures such as sole traders, partnerships, limited liability businesses, public limited liability ventures, and cooperatives, outlining their definitions and features. The report also examines the impact of different organizational structures, such as hierarchical, functional, flat, and matrix structures, on business productivity, using Tesco as a case study. Additionally, it applies a PESTLE analysis to identify external factors, including political, economic, social, technological, environmental, and legal factors, that influence a company's performance. The conclusion summarizes the key findings, emphasizing the importance of understanding these factors for business success.