The warehouse occupies a 26.5m frontage between no 2 Northgate Street and the rear of no 30 North Hill. The aim of the fieldwork was to establish the condition and exact location of the town wall underlying the north side of the building, as a preliminary to subsequent redevelopment. In the event, the inner face of the town wall was located at two points beneath the warehouse floor. The existing concrete floor was broken open in four places by the contractor (Trenches 1-4). The wall lay immediately below the modern floor in Trenches 3 and 4. Part of the inner wall face was exposed by hand and its location was plotted in relation to the existing north wall of the warehouse. In Trench 2, manual excavation to a depth of approximately 1.4m failed to locate the wall due to later ground disturbance. At the eastern end of the building, no evidence for the wall was found in Trench 1 which lay to the south of its projected course.<1>