Purpose: Debriefing is an important component of healthcare, enabling individuals and teams to reflect on their performance, thereby improving their skills and processes. However, in many healthcare contexts including operating theatres, debriefing is not routine and staff lack adequate training in debriefing skills, which may lead to negative outcomes such as reduced morale, job dissatisfaction and preventable errors. This research details the development of a simulation-based debriefing training programme for staff in Starship Theatres. Methodology: Following stakeholder discussions with theatre personnel, a learning needs questionnaire was created as an anonymous survey and completed by allied health staff in Starship Theatres. A thematic analysis of this was performed and used to guide the development of simulation-based debriefing training, with the support of the Douglas Starship Simulation Programme. Results: Thematic analysis revealed overall interest in routine debriefing, but concern around barriers to implementation; appropriate timing and duration, buy-in from all team members and potentiating interpersonal conflict. Subsequently, the training programme was developed with a strong focus on psychological safety, flexible timing and solution-focused team discussions. The programme is delivered as an hour-long workshop; half didactic (to explain the structure and communication tools) and half as interactive simulation to practice team discussions. Conclusion: Routine debriefing has garnered interest and shows promise in improving team performance, job satisfaction and therefore patient outcomes. This simulation-based programme is currently underway as a quality improvement initiative in Starship Theatres.