BackgroundChildren and young people with epilepsy are more likely to experience multiple mental health problems than those without chronic physical health conditions, yet they often do not receive evidence-based (or indeed any) psychological interventions. Integrated healthcare is recommended as a solution to address these inequalities, but remains limited in the United Kingdom. This is partly due to the lack of training and availability of ongoing supervision for clinicians to ensure the safe and effective delivery of treatments. This study aimed to train and provide supervision for health professionals to deliver a modular cognitive-behavioural intervention for common mental health problems, optimised for use in paediatric epilepsy. Specifically, this study aimed to measure therapist competence and evaluate the acceptability of training and supervision. MethodsFifteen health professionals working in paediatric epilepsy services were trained over a six-month period. Training included face-to-face training workshops and completing at least one training case of a young person with epilepsy and anxiety, depression and/or behavioural problems under close clinical supervision. Throughout the training, health professionals were offered weekly one-hour supervisions with an experienced Clinical Psychologist. Clinical competence was assessed using a widely used measure of therapist competence in cognitive-behavioural therapy. Rates of attendance at supervision sessions and therapist ratings of satisfaction were recorded. ResultsAt the end of the six-month training, 14 health professionals reached clinical competence in delivering the mental health intervention. One person left the service and therefore did not complete the training. Overall, health professionals were satisfied with the training and supervision. However, 14 % of supervision sessions were cancelled and a further 11 % were not attended. Supervision sessions were also often shorter than the standard hour used in mental health settings (M = 41.18 min, SD = 10.30). ConclusionsOur findings suggest that health professionals working in paediatric epilepsy services can be trained to deliver a psychological intervention with proficiency. However, the supervision model typically used in mental health may need adaptation to be sustainable in physical health settings. Future research is needed to evaluate the impact of training and supervision on patient outcomes and to ensure that ethical delivery of psychological interventions by health professionals without a mental health background.