Recently a three-session intervention using mindfulness (The compassionate approach to living mindfully for prevention of disease- CALMPOD) was found beneficial in a tertiary obesity service. Our aim was to assess the suitability of this intervention in mental illnesses and/or intellectual disability services. Three pre-pilot focus group discussions involving professionals and service-users were held to identify key aspects of the CALMPOD programme for adaption. Based on this, CALMPOD was modified and then piloted in among 17 in-patients in a forensic ID unit. The mean BMI was 34.76%, 76% were obese, 6% were over-weight and 18% in the normal range of weight. Only 3 patients attended the three-session programme (17%). All 3 were in the obese category, all had had individual weight management input – i.e. seen by dietician, weight management included in care plans. A post-pilot focus group, held after completion of the pilot to discuss lessons learned identified 6 key themes. (i) Patients and staff recognise that the programme was ‘necessary’ and ‘useful’, but the challenge is how to ‘start attending regularly’. Once in, participants ‘tended to stay on’. (ii) A visible publicity campaign is needed to spread awareness of the programme and its ‘newness’. This would help with staff ‘buy in’ from all wards and departments. (iii) The key message should be ‘living healthily’ and ‘feeling better’, not just weight loss. (iv) Staff and/or patients’ family members participating in the programme would be more motivating. (v) The content of the programme needs further modifying with an emphasis on shared activities, calories counting and less emphasis on definitions. (vi)Calorie counts and exercise trackers need ‘more fun and interactive elements. Based on these recommendations a revised CALMPOD- ID programme, co-produced with service users, is now being introduced in the service.