Patients with a functional psychosis are more likely to have a history of trauma, symptoms of PTSD and may have been traumatised by their psychotic symptoms. We present an anonymised case series of patients (who have given consent) suffering from a functional psychotic illness who had a significant history of trauma with symptoms of post traumatic stress disorder (PTSD). After receiving eye movement desensitisation and reprocessing (EMDR), each patient showed an improvement in their PTSD symptoms and reported an improvement in the quality of their lives. As a history of trauma and PTSD symptoms are more frequent in patients with a psychosis, and trauma may be an aetiological component of psychosis, EMDR treatment needs to be researched and explored as a treatment opportunity in this patient group.