This report delves into the intricacies of leadership and change management, using TESCO as a case study. It begins with an overview of TESCO, a British multinational grocery company, and then explores the comparison of company strategy and useful functions between TESCO plc and Sports Direct International plc, including a PESTEL analysis. The report assesses different types of organizational change and their impacts, evaluating both internal and external drivers influencing organizational behavior and leadership. It further examines impediments to change in leadership decision-making, including the application of force field analysis. Finally, the report applies different leadership approaches within various organizational contexts, evaluating those that effectively meet organizational change requirements. The conclusion summarizes key findings and recommendations for effective change leadership.