Audit is the process by which clinical staff collectively review, evaluate and improve their clinical practice with the common aim of improving standards. Modern audit has developed from the initial concept promoted in the 1980s and is now part of the concept of clinical governance. Clinical governance is a framework through which health service organizations are accountable for continuously improving the quality of their services. Clinicians have always been accountable for maintaining high quality care; clinical governance merely imposes structure in this and makes it explicit. The features of this are: (i) full participation in audit by all hospital doctors; (ii) support and use evidence-based practice, including risk management, quality assurance and clinical effectiveness; and (iii) continuing professional development.