Background Peer support groups reduce psychological morbidity and increase social support for Intensive Care Unit (ICU) survivors. Group formats differ and research, although emerging, is limited. This study explores a continuously running ICU Expert by Experience group, which has a dual role of support and service-user consultative, from attendees’ perspectives. Methods A thematic analysis was conducted on interviews with current and past members of an ICU Expert by Experience group. 11 participants took part in online and telephone interviews. Three provided written responses. Final themes were created following a process of data validation with participants. Results Four main themes emerged: (1) Support in the difficult recovery journey (2) Relationships and shared experiences (3) Value of professional facilitation (4) Practical considerations. Conclusion Patients highlighted the help gained from the group as an integral part of their recovery journey. Results also identified practical implications for those considering setting up similar support groups.