The UK has a rich and continuing heritage of political, social, legal and environmental campaigning, this history is well represented and reflected in surviving archives and several archive repositories have collection development specialisms in this area. The value of pressure group archives and the challenges and issues relating to them form three themes, reflected by the title of the article and introduced by epigraphs at the beginning of each section. Firstly a recognition of the objectives and achievements of campaigns and pressure groups, and the richness and variety of their archives, illustrated by examples from Hull University Archives at Hull History Centre. Secondly, the challenges of ensuring that pressure group archives can be identified and freely accessed by those with an interest and, of developing a consistent and comprehensive acquisition and appraisal policy at repository level and at national level. Thirdly the need to do justice to the potential of pressure group archives for research and learning.