This report provides a detailed overview of management and leadership principles. It begins by defining management and its core functions, including planning and organizing. The report then explores different leadership theories, such as trait, style, and contingency theories, highlighting their key characteristics and differences. A significant portion of the report is dedicated to differentiating between leadership and management. The report also provides a brief background on Marks and Spencer (M&S), analyzing its management structure and leadership team. Finally, the report concludes by summarizing the key concepts and emphasizing the application of contingency theory in the context of M&S, drawing upon references from books, journals, and online resources to support its analysis.