Headland Archaeology (UK) Ltd undertook a geophysical (magnetometer) survey of a 100 hectare site north-west of Banwell, North Somerset, where a new residential development is proposed. The survey has identified four distinctive areas of archaeological activity on the margins of the Somerset Levels comprising dense clusters of linear and rectilinear anomalies. The anomalies are similar in morphology and topographical setting to fen-side Iron Age/Romano-British settlement and industrial activity which has recently been identified on an adjacent site, less than a kilometre to the north-west. It is considered likely that these anomalies are due to similar activity and they are therefore assessed as of high archaeological potential. A fifth cluster of anomalies within the former wetland itself is identified as of possible archaeological potential although here, archaeological interpretation is tentative. No anomalies of any archaeological potential have been identified over the more elevated western half of the site and therefore, on the basis of the geophysical survey, the archaeological potential across the majority of the proposed development area is assessed as low.