British Library was carried out to assess their suitability with regard to established conservation criteria. Information was gathered through a questionnaire, research of articles and publications, and enquiries to individuals and institutions. Research and testing were also carried out by the Conservation Science department to investigate concerns associated with unrefined proteinaceous glue (animal glue) and certain synthetic adhesives. We found that, on the whole, there is consensus in the conservation community about which adhesives are suitable for conservation. However, some areas need more research, especially in relation to animal glue. We discovered that a synthetic adhesive (based on ethylene vinyl acetate) commonly used in the United Kingdom off-gasses volatile organic compounds. We were able to recommend adhesives for use either directly on collection items, or in housings, and to suggest an ongoing program of research and development. The review has informed our work, allowing conservators to adapt treatments according to the latest research. Overall, it has proved to be an invaluable exercise with tangible benefits to the conservation of the British Library collection.