John Mellor-Clark

John has been engaged in the evaluation of UK psychological therapies and counselling for the past 25 years. Originally trained as an organisational psychologist, John's special interest in quality assurance in healthcare has led him to regularly publish and present on a range of topics such as best practice development, service quality benchmarking and the introduction of practitioner performance appraisal. Through the mid 1990's John led the development of the CORE System as the first UK standardised quality evaluation system for psychological therapy. Today, the unique empirical yield from CORE helps create one of the single largest databases of practice-based evidence in the field. As well as being co-founder and Managing Director at, John enjoys academic posts and research consultancies at Universities in the UK and in Sweden.