J.D. Davies is a British author and journalist. He is best known for his work in the field of crime fiction, having written several novels and short stories in the genre. He has also written extensively on the history of crime and criminal justice in the United Kingdom. He is a frequent contributor to the BBC and other media outlets, and has been a guest lecturer at several universities. He is a passionate advocate for criminal justice reform and has been involved in numerous campaigns to improve the system. He is also a strong supporter of the arts, and has been involved in several projects to promote the work of emerging writers.