This report provides a review and critique of the implementation of operations management principles in Marks & Spencer, including reality, organization, fundamentals, accountability, quality control, knowing competition, and consumer collaboration. The report also discusses continuous improvement as a philosophy and describes Lean principles, as well as methods used in Lean production, Six Sigma, bench-marking, and TQM. Finally, the report provides a continuous improvement plan with recommendations for improvement based on the review and critique of operations management principles within the organization.