New air quality planning guidance for developments in Wiltshire
New Supplementary Planning Guidance (SPG) to deliver air quality improvements through the planning system was approved at Wiltshire Council’s Full Council meeting on 21 October 2025. The SPG describes that:
‘For developments that have the potential to worsen air quality, either within existing Air Quality Management Areas (AQMAs) or in areas at risk of becoming AQMAs, the SPD requires developers to submit a detailed air quality assessment with their planning application. Where impacts are identified, developers must implement additional mitigation measures to minimise harm. In some cases, the council will require developers to provide financial contributions to support wider air quality mitigation efforts.’