It is estimated that between 0.2 and 0.4 per cent of the population suffer from chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME). Service provision varies across the UK, and while there is a good evidence for the efficacy of cognitive behavioural therapy and graded exercise programmes, the evidence for group interventions is still limited. Here, the authors describe the results of their service evaluation of a group treatment programme for CFS/ME. Copyright © 2009 Wiley Interface Ltd