The Biological Weapons Convention was not born in a social vacuum. Public condemnation of biological weapons, frequently coupled with anti-chemical warfare intensified during the 1960s. This chapter focuses on the public dimensions of chemical and biological warfare (CBW) in 1960s UK, as a loose network of activists campaigned to abolish or limit these weapons. Protest groups and those challenging biological weapons policy rarely acted on their own, and their actions were but one element of a larger outcry against these weapons. The chapter begins with a consideration of the backdrop of media coverage of chemical and biological weapons. We next consider the different, yet overlapping, activities of dissenting scientists, the Anti-Chemical and Biological Warfare Group, the Campaign for Nuclear Disarmament (CND) and the Committee of 100, the Working Party on Chemical and Biological Weapons, the Women’s International League for Peace and Freedom (WILPF), and the most active figures in the Christian churches. The chapter explores how each group employed diverse forms of expertise, tactics and goals, resulting in a heterogeneous effort to raise the issue of CBW in a wider disarmament debate dominated by nuclear weapons.