The detailed magnetometer survey was carried out over 12ha on land to the south of Brockleaze near Neston ahead of a new battery energy storage system (BESS) located 2.5km north-west of Melksham Substation. The survey was conducted using a SENSYS MAGNETO MX V3 6 channel cart-based system which has 6 fluxgate gradiometers (FGM650) spaced 0.5m apart with readings recorded at 20Hz which equates to a survey resolution of 0.5m by c.0.15m. The results reveal an unmapped linear ditch that appears to have been truncated by former quarrying along with several mapped post medieval field boundaries. Evidence of former quarrying is quite widespread, together with numerous naturally formed features. A number of magnetically enhanced pit-like anomalies can be seen and although these could relate to natural features, the enhanced response together with the arrangement of them in groups could indicate an anthropogenic origin. A small rectilinear feature has also been located in the eastern part of the site, close to a 19th century former quarry trial pit, and although this appears to an anthropogenic feature it is not possible to determine the date and function of the anomaly.