Table 1.

Staff interviewed and unit staff summary.

Role	Number per shift	Summary of role	Number interviewed
Support workers (SW)	A total of 80 provided day and night care for the whole hospital	Provide patients daily support and observations	None
Senior support workers (SSW)	1 or 2 per unit	“Run the shift” organizing SW tasks and patient activities	One
Positive practice workers (PPW)	1 per unit, on shift or “clinic day”	Split role, three shifts per week as SW which includes “supernumery” hours within each shift for clinical work; 1 day per week “clinical” AP role	Two
Assistant psychologist (AP)	1 for each unit	Clinical work with patients or report writing, largely working on a unit	Two
OTs and speech therapists	Cover the whole hospital	Available for consultation	None
Mental health nurses (staff nurses)	Two on shift per unit	One as “medication nurse”; one as “shift leader”	Three: One senior staff nurse, one newly qualified, and one in training (first year)
Teacher	1 covers the whole hospital	Provides educational activity for patients	One
Senior decision makers	NA	Several hospital-based, e.g. unit managers, clinical and operational directors providing professional support and oversight	Two: One hospital-based and one offsite