This assignment delves into several prominent cases of auditing failures, specifically focusing on Deloitte LLP's audit of Mitie Group plc, PricewaterhouseCoopers LLP's audits of both BT Group plc and Redcentric plc, and KPMG Audit Plc's audit of Rolls-Royce Group. The analysis explores the factors contributing to these failures, such as a lack of audit capability, inadequate risk management, and the potential for personal relationships within the audit process. The assignment also highlights regulatory responses, including mandated audit rotation periods by the Financial Reporting Council (FRC), aimed at mitigating future risks associated with auditing.