The INforMHAA study team have created two Theory of Change model. Theory of Change is a process through which the project team sets out a clear plan for making positive social change. The first plan (titled ‘Initial Theory of Change model’) was created at the very start of the project and supported a structured approach to the various project tasks, helping us to keep in mind our intended goals and beneficiaries. To support dissemination and consolidate the desired project impact, we have developed a second Theory of Change model (titled ‘Enhancing workforce knowledge and skills to improve interprofessional working in interpreter-mediated Mental Health Act assessments’), which will be the focus of our ongoing work.