This compilation of case studies, examples and commentaries forms the third part of a set of materials relating to ethics in community-based participatory research (CBPR). Part I comprises a set of ethical principles, and part II is a set of practice principles and guidelines, published together as Community-based participatory research: A guide to ethical principles and practice. The materials were developed during 2012 as part of a research project in the ‘Connected Communities’ programme funded by the Arts and Humanities Research Council: Tackling ethical issues and dilemmas in community-based participatory research: a practical resource.