Bachelor Thesis from the year 2016 in the subject Communications - Public Relations, Advertising, Marketing, Social Media, grade: 80%, , language: English, abstract: This study will examine factors such as customer satisfaction, corporate social responsibility, service quality and loyalty programs that have crucial impact on customer loyalty. The research will focus in particular on customer's loyalty in Marks and Spencer in London. The phenomenon of loyalty has met with great deal of interest from researchers in recent years. Customer loyalty indicates sense of belonging or identification with the service or products of the organization. These feelings affect customer behavior directly and lead to repurchase goods and recommend them to others. In general, customer loyalty constitutes a complex issue to analyze since it contains many dimensions.