This study aims to determine the impact of age discrimination on the business performance and market image of UK retail industry, with a focus on ASDA. The research objectives include identifying types of discrimination, examining the impact of age discrimination on business performance and market image, and evaluating ways to overcome the impact of age discrimination. The methodology involves deductive approach, descriptive research design, quantitative research method, and random sampling technique. Ethical considerations include respect for autonomy, privacy, and dignity, scientific integrity, social responsibility, and maximizing benefits and minimizing harms.