The late Iron Age oppidum of Calleva underlies the Roman town at Silchester. Excavation (1997-2014) of a large area (0.3ha) of Insula IX revealed evidence of a rectilinear, NE/SW-NW/SE-oriented layout of the interior of the oppidum, dating from 20/10BC, with the remains of the larger part of one compound separated from its neighbours by fenced trackways. Within the compound was a large, 47.5m long hall surrounded by smaller, rectangular buildings associated with groups of rubbish pits. A concluding discussion characterises the oppidum, integrating and contextualising a series of major contributions reporting the pre-conquest finds and environmental evidence with the structural story.

"It will be essential reading for anyone interested in the late Iron Age to Roman transition in Britain and in the western provinces more generally" - Archaeological Journal

"Overall, this volume provides an important step forward in better understanding the oppidum at Calleva, oppida settlements across Britain and on the Continent and social relations in the Late Iron Age in general." - Proceedings of the Prehistoric Society