This report provides a comprehensive analysis of the business environment of Marks & Spencer (M&S), a British multinational retailer. It begins with an introduction to the business environment and its impact on M&S. The main body of the report employs PESTLE analysis to examine the external factors influencing M&S, including political, economic, socio-cultural, technological, legal, and environmental factors. Following this, a SWOT analysis is used to assess M&S's internal factors, identifying its strengths, weaknesses, opportunities, and threats. The report then explores the interrelation between the company's strengths and weaknesses and the external environment, highlighting how M&S leverages its strengths and addresses its weaknesses in response to external factors. The report concludes by summarizing the key findings and emphasizing the importance of analyzing both internal and external factors for organizational success. References to supporting literature are included.