Methods
This was a qualitative study embedded within a feasibility randomized‐controlled trial (ESCAPE) in primary care services in the United Kingdom (IAPT). Thirty‐six participants (53% female) from both usual care and intervention arms of the ESCAPE trial, including both quitters and nonquitters, were interviewed using semi‐structured interviews. Data were analysed using a framework approach to thematic analysis, using the COM‐B as a theoretical frame.