Procedure
The current study conformed to the Standards for Reporting Qualitative Research [Semi-structured interviews (mean duration = 1.25 h) in May/June 2018 were conducted by two RAs (final year Psychology students) not involved in intervention delivery. The RAs were trained by the lead author (SH) who has a wealth of experience in qualitative data collection and analysis, and in PABC. Interviews took place within 3 months of trial completion at the participant’s home or at a mutually convenient location. An interview guide (Fig. Interview guide