The Iron Age and Anglo-Saxon site at Upton near Northampton was excavated by Mr. Jackson on behalf of the Ministry of Public Building and Works, July—December 1965. In addition to Iron Age pits and ditches the principal discovery was that of a timber Saxon building which is remarkable for its combination of the structural features of a Grubenhaus with the dimensions and plan of a small timber hall. The building contained more than sixty loom-weights, and is interpreted as a weaving shed rather than a domestic occupation site. It was destroyed by fire, and charred timbers have revealed the position of internal fixed wooden furniture. From pottery and small finds it is suggested that the site was occupied in the late sixth to early seventh centuries A.D.