Chronic conditions are frequently associated with mental health co-morbidities which significantly impact on quality of life and increased cost of care as a function of less effective self-care and other complicating factors related to poor mental health (Kings Trust, 2012). For example, in a study of 245,404 participants from 60 countries across the world, an average of between 9.3-23% of participants with one or more chronic physical condition had co-morbid depression \citep{Moussavi_2007}. This is significantly higher than depression rates in people without a chronic physical disease (p>0.0001). Moreover, even after adjustment for health conditions and socioeconomic factors, depression had the largest effect on worsening mean health scores. The authors conclude that participants with one or more chronic condition and co-morbid depression had the worst health states of all of the disease states. There is now a large body of research that shows that common mental health ....