This research explores the impact of advertisement on consumer buying behaviour, with a case study of Marks and Spencer. It examines different advertisement strategies adopted by the company and their significance in influencing consumer behaviour. The research methodology used is quantitative, and the research aim is to explain the concept of advertisement within the retail industry, examine different advertisement strategies adopted by Marks & Spencer, determine the significance and role of advertisement over consumer buying behaviour within Marks & Spencer, and evaluate the impact of advertisement strategies adopted by Marks & Spencer in influencing buying behaviour of customers.