This report, prepared for the LSBM 102 module, presents a detailed proposal on sustainable leadership, focusing on the retail sector. It begins by defining sustainable leadership and its importance, especially in the context of a changing environment. The report then explores different leadership styles, including charismatic and transactional leadership, and analyzes the strengths and weaknesses of each. It introduces the Managerial Grid Model, illustrating various leadership approaches. The report then delves into the importance of leadership development programs, specifically for women and BAME staff, highlighting ethical, social, business, and economic factors. Finally, it examines change leadership, illustrating Kotter's 8-step change model and its role in implementing changes within an organization. The report uses Marks & Spencer (M&S) as a case study to apply the concepts and models discussed. The report aims to provide insights into creating sustainable leadership to address present and future needs.