Wiltshire Council has announced the temporary closures, which will allow for repairs and works by utility companies, as well as the local authority. These include Thames Water, Scottish and Southern Power Distribution, Openreach, Network Rail, Wessex Water, and SSE - as well as Wiltshire Council itself. Work: Excavation and installation of a pressure reducing valve and strainer on a bypass off an 8-inch main by Thames Water. Contact Thames Water: 07762 561848. Work: Chamber and cover exchange by Thames Water.