Resistivity survey was undertaken in two phases as part of an evaluation of the town defences prior to a third phase of repair and reinstatement by North Wiltshire District Council. A resistivity survey was carried out across two small areas adjacent to Malmesbury town walls close to the surviving remains of the East Gate. Area 1, outside the town wall, revealed high resistance linear anomalies associated with a trackway and areas of high resistance immediately adjacent to the extant wall remains. Area 2, interior to the town defences, revealed an area of high resistance where the current land surface overlies the town wall. Little additional evidence for the development of the defences was revealed by the survey. Additional survey located underground services, other faint linear anomalies are of uncertain origin. A large area of low resistance corresponds to damp ground adjacent to a stream forming the south eastern boundary of the survey area. It is likely that this low resistance area defines alluvial deposits where environmental indicators may be preserved.