Traumatic experiences are known to have a significant impact upon one’s physical and mental health. Post-traumatic stress disorder (PTSD) is understood to be a common mental health consequence of trauma. However, Complex Trauma and consequences of adverse childhood experiences appear more prevalent and a serious public health concern that hinders the individual’s daily existence, thus emphasising the need to implement a culturally free treatment intervention. In this chapter, we begin by introducing traumatic experiences in several contexts and explore the treatment for trauma. It will focus on a research study that employs Comprehend, Cope and Connect (CCC), a third wave CBT approach, to deliver a culturally free form of therapy that has been adapted for individuals from diverse populations. The CCC approach’s relevance to cultural adaptation is explained and discussed through the use of two case examples from the main study. The Culture Free study found that CCC was both feasible and acceptable in diverse populations, echoing existing research on cultural adaptations which found use of mindfulness to be accepted and appreciated as an effective intervention that can elicit concrete positive change across a broad range of mental health presentations, including trauma and trans-diagnostically. Further investigations utilising a robust methodology and powered sample are warranted in particular with diverse populations presenting with complex trauma.