Cognitive behavioural therapy (CBT) in its current form might not be acceptable to service users from a variety of backgrounds. Therefore, it makes sense to adapt CBT when working with diverse populations. Contributors to this special issue of the Cognitive Behaviour Therapist have tackled the issues around the cultural adaptation of CBT from various perspectives, using a variety of methods, and have addressed topics ranging from cultural adaptation to improving access to CBT. Here, I briefly summarize and discuss the papers in this special issue. I start with a systematic review of CBT for social anxiety across cultures. Seven articles cover aspects of adaptation of therapies for people from different backgrounds. Three papers discuss the issues of gender and sexuality when using CBT, while another three papers focus on refugees, asylum seekers and the homeless, and two papers describe the application of CBT with religious populations. Finally, there are seven papers on issues related to service delivery, practice and training and supervision when working with a diverse population. Collectively, papers in this special issue provide us with sufficient evidence that cultural considerations play a vital role when using CBT, offer practical suggestions for improving cultural competence and most importantly, can catalyse future research. However, the full potential of culturally adapted interventions will not be realized until and unless access to CBT is improved. Therefore, there is a need to build robust evidence to convince funders, policy makers and service managers.