Background: The use of psychological formulation within teams is steadily growing in popularity, although research surrounding its use is limited. This study aimed to explore the experience of multidisciplinary professionals outside of psychology in participating in team formulation sessions. Method: Constructivist Grounded Theory was used to analyse semi-structured interviews conducted with ten members of staff from a variety of professional backgrounds working within two adult mental health teams, one within community settings and the other inpatient. Interviews were transcribed and then subjected to line-by-line coding, from which categories were derived.