This report provides an in-depth analysis of teamwork and leadership within the context of the John Lewis Partnership (JLP), a major UK retailer. The report begins by defining teamwork and explores the features of an effective working team, referencing Belbin's team role theory. It then evaluates the author's own team and skills within the social media team at JLP, highlighting the importance of understanding social media content, creative mindsets, and leadership skills. The report compares different theories of team development, including Tuckman's stages of team development and a comparison of Maslow's Need Hierarchy and Herzberg's Two-Factor Theory. Furthermore, the report compares leadership attributes and skills, emphasizing the importance of team support and motivation. Finally, the report evaluates the author's own skills as a team leader and discusses the effectiveness of specific team performance, with a focus on training and development within an organization.