Dr. John Brennan is a highly qualified medical professional with MB BS, MRCP, MRCGP, DCH, DRCOG, DMJ, and AFOM, and over 20 years’ experience as a forensic examiner for the Metropolitan Police, specialising in physical and psychological capacity assessments.
He founded Maitland Medical Service, later sold it, and has served as Chief Medical Officer in occupational health roles across multiple industries, working with clients such as M&S, Mercedes UK, DPD, Formula 1 construction teams, Heinz UK, Veolia, and several universities.
His background includes hospital medicine and training in London teaching hospitals, alongside advisory work for high-net-worth individuals. He has held forensic advisory roles, including Section 12 approval, and continues to support NHS services alongside private and occupational health practice.
Dr. Brennan has led clinical services across consultations, HAVS assessments, policy development, clinical auditing, and team oversight. He has advised organisations including the Welcome Foundation, Clarins, Coty, Alzheimer’s Society, Parkinson’s UK, and educational trusts, and is fully registered and licensed to practice in the UK.