Science has a powerful role in society. It can fuel innovation, shape policy and influence public opinion. However, science can also be highly controversial and subject to substantial disagreement and debate. Such debates are often evident in the media which regularly reports on areas of disagreement and debate. This article draws on the case‐study of bovine tuberculosis (bTB), which has become a highly politicised issue in recent years, to explore media representation of public knowledge controversies. The disease has received substantial policy and media attention, particularly in relation to badgers and their role in its spread. This article focuses on the ways in which the various debates associated with bTB and its control are presented in the press, with a specific emphasis on badger vaccination. An in‐depth discourse analysis compares regional, national and farming press, and identifies a number of complex dualisms against which the debate is framed. These dualisms help to explain the unclear policy direction and constant divisions between those who do and do not support badger vaccination, and the continued status of bTB control as a public knowledge controversy.