“…Specifically, within the SOLAS intervention, this criteria should highlight how these BCTs should be fully delivered using a SDT-based communication style, as a recent review found that a person-centred manner of BCT delivery explained all of the between-study variations in long-term behaviour maintenance, thus supporting its inclusion for effective interventions (Samdal et al, 2017). Furthermore, as fidelity guidelines suggest that providers be monitored during delivery (Bellg et al, 2004;Borelli, 2011), individualized feedback could be provided to those that need it (Fixsen, Blase, Metz, & VanDyke, 2013;Matthews et al, 2015). Therefore, individual 'booster' or 'coaching' sessions could be considered within future training programmes to further enhance provider delivery.…”