In this Guest Editorial for a special issue of Legal Information Management, David Gee (Deputy Librarian, Institute of Advanced Legal Studies) summaries the aims and outputs of a national socio-legal training day on “Sources and Methods in Criminology and Criminal Justice” at the Institute of Advanced Legal Studies on Friday 20 November 2015. He introduces the articles developed from the training day by librarians, information managers and interested researchers which seek to highlight what is included in key collections and how they can be used for criminology and criminal justice research. The workshop was jointly organised by the British Library, the British Society of Criminology, the Institute of Advanced Legal Studies and the Socio-Le...