This report examines the crucial aspects of developing individuals, teams, and organizations within the context of Marks and Spencer. It begins by outlining the essential knowledge, skills, and behaviors required of HR professionals, including negotiation, active listening, legal and ethical knowledge, and coordination. The report then delves into a personal skill audit and professional development plan for an HR role, identifying strengths, weaknesses, and areas for improvement in IT skills, communication, and conflict resolution. It differentiates between organizational and individual learning, emphasizing the importance of continuous learning and professional development for sustainable business performance. Furthermore, the report highlights the role of high-performance working in employee engagement and competitive advantage, and explores various approaches to performance management, collaborative working, and effective communication. The report provides a comprehensive overview of HR strategies for fostering a productive and thriving organizational environment.