Recently there has been a growth of interest in mindfulness-based psychotherapeutic approaches across a range of medical problems. Cardiac rehabilitation patients often suffer from stress, worry, anxiety and depression, all of which can lead to poor prognosis and worsening of cardiac symptoms. Using interpretive phenomenological analysis (IPA) of participant experiences, this study reports on the first known Mindfulness-based Cognitive Therapy group adapted for cardiac rehabilitation. Analysis identified the development of awareness, commitment, within group experiences, relating to the material and acceptance as central experiential themes. The use of the approach was supported for this population.