“…No UK studies of the CRN role were found. However, commentaries highlight a gap in understanding of the role, its scope and potential contribution to clinical trials (Raja‐Jones 2002, Stephens‐Lloyd 2004). We were aware of the growing number of studies evaluating the development of ‘specialist’ and ‘advanced’ roles for nurses – including clinical nurse specialists, nurse practitioners, advanced nurse practitioners, consultant nurses – which can also incorporate a research component.…”