The paper has a twofold aim. First, it describes the complex process of gaining consent retrospectively for the publication of clinical material after the institution, where therapy was taking place, had closed down. The clinical material was derived from the psychotherapeutic work with an autistic young boy and his family. Details of the complicated process of gaining consent to publish this material are provided. The second aim of this paper is to discuss the important role of ‘trust’ when asking or granting consent for publication of clinical material. It is argued that trust at different levels (and amongst various people) plays a pivotal role in gaining consent for publication.