For the first half of 1976, the UK's punk world was a network of interactivity involving no more than 100 people and a handful of focal places in central London. This chapter considers how London's punk world began to spread out, generating a national punk world. Media networks broadcast information regarding punk to individuals living both within and beyond London stimulates many to become involved and spark a process which led to the emergence of local punk worlds in cities across the UK. The chapter also considers the 'moral panic' which brought punk into the mainstream cultural arena, massively increasing rates of adoption and adherence among the youth population. Television, radio and other organs of the mass media are key elements in the broadcast networks responsible for diffusing culture during the punk era.