Archaeological monitoring was targeted on any mechanical/hand excavation undertaken by Adroit where there was potential for archaeological impact. In such instances, monitoring was by permanent-presence of a single archaeological supervisor on 24 separate site visits. The watching brief at Andoversford STW identified a number of archaeological features, including occupation / cultivation layers, a limestone concrete surface and associated wall footing, vestiges of a second stone wall or surface, possible ditches, pits and postholes, as well as a quantity of Roman and Post-Medieval pottery and other material finds. Both features and finds were suggestive of on-site activity throughout the Roman period, with a focus during the 2nd and 3rd centuries. A background level of Iron Age and Post-Medieval / Early Modern occupation was also in evidence.