This report presents an assessment of the results of an archaeological excavation at Norwich Road, Kilverstone, Thetford, Norfolk undertaken between December 2000 and June 2001 by the Cambridge Archaeological Unit. It also includes recommendations for further work. A separate Updated Project Design with outline timetable for analysis and publication will follow once specialists’ work schedules are confirmed. The fieldwork was commissioned by the Ashwell Group Ltd in advance of a housing development. The site comprised four separate areas of excavation within two fields on the north-eastern outskirts of Thetford (centred TL 8840 8385). The open area excavations confirmed the results of an earlier trench-based evaluation, producing further evidence of Neolithic and Early Bronze Age pits, a Neolithic flint scatter, a major Late Iron Age/Romano-British settlement and an 18th century brick kiln. In addition, evidence of previously unknown Early Saxon occupation was recovered. A group of ninety-six Neolithic and Early Bronze Age (4000-1500 BC) pits was excavated in Area A. Six of these were found to contain cremated human bone (one with two urns); the rest produced quantities of worked and burnt flint, as well as charred hazelnuts and a variety of pottery types. Seven pits of similar date and assemblages were uncovered in Area B; these lay underneath a buried soil, which produced large amounts of Neolithic worked flint. A number of prehistoric pits were also revealed in Area C, along with a small Neolithic structure. A dense and complex concentration of Late Iron Age (100 BC – AD 43) and Romano-British (AD 43 – 410) archaeology was uncovered within Area C. This included the remains of seven structures as well as a complex sequence of field boundary ditches and enclosures. A significant amount of metalwork was recovered, including a ‘blacksmith’ deposit of pewter plates, hammer, tongs and charred wood. Six burials – three adults and three infants – and an urned cremation were also found. Ten Early Saxon ‘sunken feature buildings’ (SFBs) were recovered in Area C, along with two post-built structures. These dated to between the 5th and 7th centuries AD. Seven rectangular pits containing large amounts of burnt flint were also assigned to this period. Several parallel ditches and three pits in the south-eastern corner of Area C could represent the periphery of a Medieval settlement (14th century) which lay just beyond the edge of site. One pit in Area B and a number of stray metal detector finds were also found to be Medieval in date. An 18th century ‘Suffolk-type’ brick kiln was excavated in Area D, along with its adjacent ‘stoking pit’. Three rather poignant 20th Century features, created when a U.S. aeroplane crashed during the Second World War, were recovered towards the northern corner of Area C. The results of the excavation are of considerable importance. The number of Neolithic/Early Bronze Age pits uncovered is impressive, placing the site alongside major sites such as Hurst Fen and Broome Heath. The Iron Age settlement appears to have been fairly low-key, and provides an important context for other ‘high status’ sites known in the vicinity. The Roman period settlement underwent several major transformations in its life, from a site with possible ‘religious’ associations, to a farm, to a metalworking centre. Its complex developmental sequence allows us to gain considerable insight into the processes of change within a single settlement; it also adds to our somewhat scanty knowledge of the Roman period in the area. The Early Saxon settlement appears to have paid little attention to the remains of earlier occupation, and certainly was not continuous with it; it too enhances our piecemeal knowledge of the Saxon period in the area. The Medieval features suggest that a 14th century settlement may have existed to the east of the excavation area. The 18th Century brick kiln was remarkably well-preserved, and allows us to add to the industrial history of Thetford.