Friends of the Nations' Libraries (FNL), established in 1931, is a unique UK charity dedicated to preserving the nation's written and printed heritage. Focused solely on the acquisition of rare books, manuscripts, and fine bindings, FNL operates in a manner akin to the Art Fund, but specifically for the literary world. The organization provides essential acquisition grants to national and regional archives, libraries, and specialist collecting institutions, ensuring that significant collections are preserved for future generations.

FNL not only awards grants but also actively raises funds to enhance their grant-giving capabilities and to facilitate the acquisition of pre-eminent collections, such as the Blavatnik Honresfield Library. Additionally, they serve as a conduit for donations of books and collections, thus enriching the institutions they support. As demand for their services grows, FNL invites members and supporters to join their mission to save the written heritage, reinforcing the importance of access to historical texts and literature for all.