Ansgar is the author of books including a short history of Cynicism, and the novels, Black Vellum, Plague Theatre, Wretch, The Wake and the Manuscript, and The Sick List.

He is editor at Erratum Press, and co-founded Risking Education, an imprint of Punctum Books. His writing has been published across a range of journals, books, and media (see Etc.), appearing in Chinese, Japanese, Spanish, German, Estonian, and Greek translation.  He is based in Sheffield, UK.