Tristan Barber is a Consultant Physician in HIV Medicine at the Ian Charleson Day Centre, Royal Free Hospital, and Honorary Associate Professor at the Institute for Global Health, University College London. In addition to being Chair of the European AIDS Clinical Society (EACS) Young Investigatory Network (YING) he is Honorary Secretary and Vice Chair of the Education and Scientific Subcommittee for the British HIV Association (BHIVA), and Trustee and Immediate Past Chair of the Board for the peer support charity Positively UK. Tristan established a dedicated frailty service for ageing patients with HIV infection in 2019 (The Sage Clinic). He has a research background in HIV-related neurocognitive impairment and antiretroviral clinical trials. Tristan is current Editor-in-chief for the journal ‘HIV Research and Clinical Practice. He is the North Central London HIV specialist link for the HIV GP Champions scheme.