This paper is based on a presentation of the same title given by Jane Bradbury, Head of Knowledge and Information at the law firm Slaughter and May, at the inaugural seminar of the BIALL Knowledge Management Group on 9th May 2016. The article has been compiled by the other two authors, Jon Beaumont and Tim Barlow, and so not all of the opinions expressed are attributable to Jane. The authors are also indebted to Anne Ashdown, of recruitment firm tfpl, who presented at the same seminar on the subject of recruitment for legal knowledge management (KM) roles and whose observations are also incorporated in the article. The paper considers the increasing impact of KM on the work of library and information professionals in law firms. It discusses the related role of professional support lawyers (PSLs), the knowledge “hot topics” which are driving evolution of the profession, the transferability of information skills, and opportunities for development and career progression beyond the traditional boundaries of library and information management.