This dissertation investigates the impact of social media marketing on customer attitudes within the UK market. The research explores how social media influencers shape consumer behavior, identifies key demographics across various social media platforms, and analyzes the relationship between social media usage and customer attitudes towards brands. The study includes a comprehensive literature review, detailing the evolution of marketing strategies and the increasing significance of social media in reaching target audiences. The methodology section outlines the research design, data collection methods, and ethical considerations. The findings, presented through data analysis and interpretation, highlight the effects of social media on brand awareness, customer loyalty, and purchasing decisions. The conclusion summarizes the key insights, discusses limitations, and suggests areas for future research. The report provides a detailed analysis of the impact of social media on customer attitudes and behaviors.