This document provides guidance on how to conduct a successful clinical audit as a junior doctor. It discusses that clinical audit measures practice against standards to assess whether the right things are being done in the right way. The document outlines the five stages of the audit cycle and emphasizes that for an audit to be effective it should have support from hospital leadership, be part of a structured program, involve multiple disciplines, include patients, and use standards from clinical guidelines. Repeating audits is important to assess if improvements were successfully implemented.