This study examines the impact of corporate social responsibility (CSR) on customer behavior through a case study of Lidl UK. It explores the concept of CSR, its evolution, advantages and disadvantages, and how it influences the company's business environment. The study also aims to understand how Lidl UK is working to achieve CSR and how it influences individuals to buy from them. The research questions include consumer awareness of CSR, the influence of CSR policy on consumers, and their willingness to pay more for socially responsible products. The study uses Carroll's CSR pyramid, the Triple Bottom Line theory, and the Stakeholder theory to analyze the data.