This book brings together new archaeological, historical and palaeoecological approaches to the transition from the Romano-British to medieval Celtic economy between the fourth and ninth centuries AD. The articles include a reassessment of the end of the Romano-British economy, suggesting that the conventional interpretation - a sudden collapse in production in the early fifth century -is incorrect; pollen analysis is a key approach in understanding the end of the agricultural economy,and here, for the first time, all relevant pollen sequences are catalogued and discussed. There is a new research into imported pottery and glass and inscribed stone monuments, and the contacts which brought imports into Britain and Ireland are reevaluated from new evidence which includes archaeological material from shipwrecks of AD 400-600.: K.R. DARK, PETRA DAY, JONATHAN M. WOODING, EWAN CAMPBELL, ANNE BOWMAN, CHRISTOPHER SPAREY-GREEN, JEREMY KNIGHT