This report provides a comprehensive analysis of organisational behaviour within Queen's Hospital, focusing on the dynamics of teamwork and team development in response to an increased patient flow. It explores the significance of teamwork for organisational success, contrasting effective and ineffective team structures based on the Belbin and Tuckman models. The report outlines the application of Belbin's team role theory for assigning roles within a trauma team, and describes the stages of Tuckman's model for effective team building. Furthermore, it examines the impact of group dynamics on performance using Lencioni's theory and discusses organisational philosophies and concepts that inform effective behaviour. The report concludes by recommending effective team development models for Queen's Hospital, justifying their suitability, and highlighting how team development theories and organisational behaviour concepts influence behaviours positively or negatively.