The document discusses different theories of audience categorization, including those proposed by Burton, Hartley, and Fiske. Burton identifies socially grouped and media grouped audiences. Hartley expands on Burton's social groupings, identifying 7 subjectivities including self, gender, age, family, class, nation, and ethnicity. Fiske discusses additional categories such as education level, religion, political allegiance, region, and urban vs. rural distinctions. The document also lists the UK's social status classifications from A to E.