Objectives: To explore the information needs of the 'frontline' public health workforce, whether needs are being met and barriers to meeting needs. Study design: A qualitative research study using in-depth semi-structured interviews. Methods: A qualitative study, comprising eight semi-structured interviews, was conducted with one representative of each of eight categories of frontline public health professional (children's centre manager, community development worker, community midwife, district nurse, health visitor, community pharmacist, practice nurse and school nurse) to determine their public health role, information needs and barriers to meeting needs. Interviews were tape-recorded and data were analysed to identify themes for each category and common themes. Results: Respondents expressed similar needs, some of which could be met by a dedicated library and knowledge service, given adequate funding, and some of which need input from management. The library could supply: news bulletins and up-to-date information, especially local information; targeted local websites and databases; training in literature searching skills, basic information technology (IT) skills and critical appraisal; course and work support, with access to local library facilities; a literature search support service; signposting, with a named library contact; and access to information for patients. Management input is required to remedy basic structural barriers, including: lack of IT equipment and training; lack of time to access information; lack of funding for courses and professional development; and lack of communication of information from higher levels. Conclusions: Some information needs can be met by improvements and widening of access to library services, which may need increased funding. However, some barriers to meeting information needs require action elsewhere in the public health management structure. Changes need to be made in communication of public health strategy, and engagement needs to be improved between higher managerial levels and the frontline workforce. (C) 2010 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.