This document discusses Channel 4 personas created for designers and others at the broadcasting organization. The personas are based on a survey of 1,800 UK respondents segmented into 8 groups based on attitudes. The personas include details on demographics, interests, device usage, and favorite shows to help understand different audiences. The document notes the personas were updated in 2012 to reflect evolving behaviors and the addition of a social media dimension. It emphasizes using real data, engaging others to construct personas, keeping them visual and up to date through iteration.