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Background  Despite the acknowledged difficulties of measuring satisfaction for people with intellectual disabilities, the current study examined the quality of life (QoL) of the Camberwell Cohort, a total population sample of people with severe intellectual disability and/or autism [Wing & Gould, Epidemiology and Classification, 9, 1979, 11].Methods  The Lifestyle Satisfaction Scale (LSS) [Harner & Heal, Research in Developmental Disabilities, 14, 1993a, 221] was combined with selected questions from the Quality of Life Questionnaire Schalock & Keith 1993, Quality of Life Questionnaire, IDS Publishing Corporation, Worthington and conducted with 12 people with intellectual disabilities and 72 proxy respondents.Results  Inter‐rater reliability on overall score was available for 10 participants and was acceptable with a Spearman's Rank order correlation co‐efficient over 0.8. There were no significant differences between the scores of proxies and service users on the domains of the LSS. The sample of service users who completed the interviews was too small to allow further detailed analysis of their responses. However, responses from the proxy interviews indicated that there were no differences in life satisfaction between those socially impaired and socially able. However those with autism were reported to be less satisfied on Community Satisfaction while those with challenging behaviour had lower scores overall and specifically on Community Satisfaction. Those with an IQ below 50 had lower scores overall, than those with an IQ above 50 and specifically on Recreation Satisfaction. Linear regression analysis on total QoL score indicated that only three variables seemed to be important in predicting proxy QoL scores: challenging behaviour at Time 3, IQ at Time 3 and independent living skills at Time 1.Conclusions  Despite the difficulties encountered, this study provided some support for the widely help belief that QoL is lower for those with intellectual disability and for those with challenging behaviour.