Julian Walker's books have in common a collector's approach, examining language and social history, building up collections of words, phrases and short texts which are all examined to bring out their histories, their serendipitous connections and their particular curiosities. He has written three books on the history of words and language for Shire Books, 'Trench Talk', with Peter Doyle, for the History Press, and two books on the history of medicine and cosmetics, using historical texts, for the British Library. In 2010 he was commissioned to write 'Evolving English Explored' to accompany the British Library's exhibition on the history of the English language; this volume is currently available from the BL. As an educator he has worked with schools, prisons and refugee groups, and for the past ten years has run regular workshops for schools, colleges and adults at the British Library, covering English literature and language, art, history, and the history of the book.
He has been a professional artist for twenty years, mostly working with museums and collections; he was the first artist in residence at The Natural History Museum in London, and has worked with several major museums in the UK, as well as showing work abroad. His work can be seen in several public collections in the UK, and has involved installation, drawing, the adaptation of historical objects, performance, and running public-engagement projects with adults and children.