The first two volumes of this history, written by Bernard Sendall, described the events behind the birth and early years of independent television up until 1968. This volume focuses on the central issues facing the Independent Broadcasting Authority and independent television companies during the years of enquiry and uncertainty between the beginning of a new contract period in July 1968 and the passage of the Broadcasting Act and the announcement of successful applicants for new contracts in December 1980 This period was marked by many official investigations culminating in the comprehensive report of the Annan Committee and the passage of the Broadcasting Act 1980. The book details campaigns against violence and sex on the screen, greater accountability from broadcasters and public access to the media. It discusses the impact of colour television and the launch of a fourth channel on Britain, and explains the differences of opinion between politicians and broadcasters. The other volumes in the same work are "Origins and Foundations", "Expansion and Change" and "The Companies and Their Programmes".