Neil Walker is the Chief Data Officer for Gut Reaction and Clinical Bioinformatics and Statistical Genomics Manager at the NIHR BioResource. He has spent more than 30 years organising data for medical research, previously working for the MRC, Wellcome Trust, and the NHS. Projects have ranged from a complex 40-person clinical trial to checking facts and figures for a national breast screening program. Along the way, he has developed a deep interest in making de-identified data available for reuse by the right researchers, with the right questions, in the right setting. He has spent many years on Data Access Committees, where the recent focus has been bringing the patient voice to the fore.