This report delves into the distinctions between leadership and management, using Mark & Spencer as a case study. It compares the roles and characteristics of leaders and managers, highlighting the importance of positive attitudes, innovation, communication, delegation, and decisiveness. The report examines the functions of managers, including setting objectives, motivating employees, organizing tasks, and developing people, alongside the roles of leaders in team building, guiding team members, and problem-solving. It then contrasts the roles of leaders and managers in various situational contexts, such as customer relations, supplier management, government regulations, and employee development. Furthermore, it explores different leadership theories, including situational, systems, and contingency leadership, evaluating their strengths and weaknesses. The report also addresses key approaches to operations management, such as Just-in-Time, and the roles of leaders and managers in improving operational efficiency and adapting to environmental factors.