“…The research employed a purposeful snowball sampling strategy (McKeever, Jack and Anderson, 2015; Fletcher, Zhao, Plakoyiannaki and Buck, 2018), initially utilising the extended professional networks of the research team to access respondents in senior policymaking roles, before leveraging interviewee recommendations to initiate further introductions, akin to the approach used by Arshed et al (2019). Information-rich examples for study were selected, which were likely to yield substantive information about the research questions (Singh, Corner and Pavlovich, 2015).…”