The third volume in the Society's series on the excavations of this late Iron Age and Roman site. Excavations on the site of the forum baslica of the civitas capital at Calleva Atrebatum have produced the first substantial evidence of the layout and character of the late Iron Age oppidum. In addition to the structural evidence, major assemblages of late Iron Age coins, ceramics, metalwork, faunal and other environmental data are reported on.