The Quaternary of the Isle of Man and Northwest England was produced to accompany the QRA Annual Field Meeting based in Douglas on the Isle of Man and at the University of Liverpool, 19th-23rd April 2004. The broad themes covered are Devensian glaciation, late glacial climatic and environmental change, Holocene climate change, vegetation history, relative sea level trends and coastal evolution. These regional themes are of relevance to the Late Quaternary history of Great Britain and Ireland, and are both illustrated and discussed through a consideration of site-specific detail within the wider regional context.