This report analyzes the impact of change on organizational strategy through PEST analysis of Tesco, Morrisons, and Unilever. It discusses the drivers of change and their impact on operations, as well as a model change for effective implementation. The report includes conducting PEST analysis for each case study to identify key drivers, evaluating ways under which change will impact leadership, individuals as well as team behaviour, discussing the intended change as well as drivers for the change, and performing the change model to understand how the change will implement and help the firm.