This study uses qualitative research methods: in-depth semi-structured interviews, followed by thematic content analysis. This methodology is best suited to in-depth exploration of the experiences and perceptions of research participants, and the meanings they attach to these (Braun and Clarke, 2006; Patton, 2002). As such, it is well-aligned with the needs of case studies undertaken to inform policy, as was the current research (Ritchie and Spencer, 2002). We report these methods according to Consolidated Criteria for Reporting Qualitative Research (COREQ) guidelines (Tong et al., 2007).