A major oral history project to gather the life stories of British scientists has culminated in the launch of a new online archive by the British Library. ‘Voices of Science’ is drawn from a National Life Stories programme ‘An Oral History of British Science’, and features interviews with over 100 leading UK scientists and engineers, telling the stories of some of the most remarkable scientific and engineering discoveries of the past century as well as the personal stories of each individual. The website showcases extracts from across all of the interviews carried out by OHBS as well as some existing interviews in the National Life Stories Collection. It provides a curated introduction to the range of content and to the lives and careers of the individuals involved, including access to audio and video highlights from the interviews, as well as photographs, biographies and other contextual information. The project has been generously supported by the Arcadia Fund. Over 1000 hours of unedited interviews, each lasting 10-15 hours, are being made available in full on the British Library’s Sounds website.