This report provides a comprehensive analysis of the business strategy of Marks and Spencer. It begins with an introduction to business strategy and its importance, followed by an application of the PESTLE framework to analyze the macro-environment, considering political, economic, social, technological, legal, and environmental factors impacting the company. The report then delves into the internal environment, using SWOT analysis to assess Marks and Spencer's strengths, weaknesses, opportunities, and threats. Further, it applies Porter's Five Forces model to evaluate the competitive landscape and proposes strategies for enhancing competitive advantage and market position. Finally, the report incorporates various theories and concepts to devise a strategic management plan, culminating in a conclusion summarizing the key findings and recommendations. The report emphasizes the importance of strategic planning in adapting to changes in the business environment and achieving desired objectives.