This report provides a comprehensive analysis of Marks and Spencer's corporate sustainability initiatives. It begins with an executive summary and introduction, outlining the significance of corporate strategy for long-term market sustainability. The main body delves into Marks and Spencer's operations, examining its products, history, and objectives, followed by an in-depth PESTLE analysis to assess the impact of political, social, economic, technological, and environmental factors on the company's sustainability. The report then conducts an internal analysis, evaluating the company's strengths, weaknesses, opportunities, and threats (SWOT). Furthermore, it applies Porter's Five Forces model to assess the competitive landscape, including competition levels, threats of substitutes, new entrants, and bargaining power of suppliers and customers. The report analyzes M&S's annual report, evaluating its revenue, production costs, and competitive advantages. It concludes by identifying sustainability reporting issues and recommending strategies for improvement, emphasizing the importance of decision-making and strategic planning to enhance corporate sustainability. The report highlights M&S's efforts in areas like ethical sourcing, environmental policies, and its 'Plan A' green initiative, alongside its challenges in a competitive retail market.