This report examines the distinct roles and characteristics of managers and leaders within the context of Tesco, a leading multinational retailer. It explores how these roles manifest in different situations, applying theories like situational leadership, system leadership, and contingency. The report also delves into key approaches to operations management, highlighting the importance of Six Sigma and Total Quality Management in achieving Tesco's business objectives. Finally, it analyzes factors within the business environment that impact operational management and decision-making processes, emphasizing the role of ethical standards and corporate governance in Tesco's success.