A detailed magnetometer survey was carried out by Archaeological Surveys Ltd within land outlined for an extension to the Stowell Concrete works in Yatton. It was carried out using a hand-pushed, 5 channel cart-based system. The results revealed evidence for extant drainage gullies and also a zone of magnetically variable responses that are likely to relate to natural features. Survey over an area of a proposed new office revealed only a response to magnetic debris, likely to relate to material associated with Holly Lodge Farm which was demolished in the early 20th century.