This article provides a comprehensive analysis of strategic management for Marks & Spencer, covering PEST analysis, Porter's Five Forces, value chain analysis, and core competencies. It also discusses the company's external environment, strategic issues, and recommended strategies. The article emphasizes the importance of understanding the political, economic, social, and technological factors that affect the company's operations, as well as the need to differentiate its products and focus on specific customer groups. The article is relevant for students studying strategic management, marketing, and business.