“…Socioecological approaches allow for the exploration of issues across five levels: individual, intrapersonal, organisational, community and policy [ 38 ]. Such models are increasingly used to study public health issues, including opioid use and dependency (e.g., [ 39 , 40 , 41 , 42 , 43 , 44 ]). However, only a small number of studies have adopted this approach to specifically explore experiences of OAT [ 39 , 45 , 46 ], and, to our knowledge, no studies have been conducted in a UK treatment context.…”