ABC1 is a social classification system used in the United Kingdom to categorize individuals based on their occupation and income. It typically includes professionals, managers, and higher-income groups, representing a demographic that is often more educated and has greater purchasing power. This classification is part of a broader system that includes other categories like C2, D, and E, which represent different socioeconomic groups. Marketers and researchers often use ABC1 to target specific audiences for products and services, as this group is seen as more likely to spend on premium offerings.