Public Health England plays a vital role in ensuring the health of the nation. The Knowledge and Library Service (KLS) is a key part of the organisation's evidence supply chain. KLS staff handle over 200 requests for literature searches per annum, and this number is increasing exponentially year on year. Searches are often complex and require specialist public health knowledge to complete effectively. Library staff who are new to the area of public health require support and training. In this article, Anh Tran, Knowledge and Evidence Specialist for Public Health England, discusses a peer supported literature search training course that has been developed in-house for the benefit of new library staff, and to increase the Knowledge and Library Service's literature searching capacity at Public Health England.