The site lies to the S of the temple of Claudius, within an area of Insula 30 thought to have contained at least one public building, possibly a a basilica. Past observations include a group of foundations belonging to a large post-Boudican structure (Crummy, 1971) and plaster mouldings apparently from columns of a building destroyed in AD 60/61. The frontage of the site was established in the late C11 when this stretch of the High Street was diverted around the newly constructed defences of the csatle. INvestigations were limited to the advance excavation of stanchion holes across the central area of the site, followed by a watching brief prior to redevelopment. No evidence for the medieval High Street frontage survived. Clearance of existing early C20 floors reduced the level of the site by up to 0.7m revealing a dark post-Roman topsoil. Where fully excavated this contained no trace of early post-Roman occupation. In two places the topsoil was cut by substantial E-W robber trenches. Adjoining the southern sides and possibly associated with the robbed foundations, were Roman floors pf opus signinum overlying make-up and rubbish deposits. A trench near the NE corner of the site revealed part of a mortared tile plinth. Since no make-up or floor was discernible in this trench it is possible it remained an open area throughout the Roman period. the earliest levels contained mixed sand and daub deposits which strongly resemble material found elsewhere in association with the demolished rampart of an annexe of the legionary fortress, the main body of which stood 150m to the W. <1> <2>