This report provides a comprehensive analysis of change management within Marks and Spencer (M&S). It begins with an introduction to the company and the context of strategic change. The main body is divided into two parts. Part 1 includes a PESTLE analysis of M&S, examining the political, economic, social, technological, environmental, and legal factors influencing the company. It then applies Kotter's model to understand the change process, evaluates the long-term implications of change, and provides recommendations for minimizing the effects of change through effective planning. It also covers change impact analysis and risk identification. Part 2 focuses on leadership and change management, applying force field analysis to determine support and opposition for change. It discusses barriers to change, their influence on decision-making, and the leadership approaches at M&S. The report evaluates these approaches and change management models, providing a critical assessment of the strategies employed to manage change within the organization, including the successes and challenges faced during the change process. The report concludes with references to the sources used throughout the analysis.