This research proposal aims to investigate the impact of corporate governance and big 4 audit on the financial performance of UK’s supermarket industry. The motivation for selecting this topic arises from the highly competitive and monopolistic nature of the industry, as well as recent innovations and developments. A gap in the literature has been identified regarding the impact of big 4 audit firms on the financial performance of the entire industry. The research will use a total of 5 organizations, including the 4 big audit firms and Tesco as a representative of the UK’s supermarket industry. The research objectives include identifying the impact of corporate governance and big 4 audit on the financial performance, analyzing the tools for assessing financial performance, and exploring ways to minimize the influences of corporate governance and big 4 audit on the industry's financial performance. Secondary data will be collected from books, journals, articles, company websites, and annual reports. The researcher has average proficiency in using SPSS (Statistical Package for the Social Sciences).