A detailed gradiometer survey was conducted over land at Foreman Road, Ash, Surrey, (NGR 490109 150635) with the aim of establishing the presence, or otherwise, and nature of detectable archaeological features on the site ahead of proposed residential development. The project was commissioned by Persimmon Homes Southern. The survey area consists of a single large field subdivided into many smaller paddocks; it is used for pasture. The gradiometer survey was undertaken between 2nd and 3rd October 2014 using a Bartington Grad 601-2 magnetometer, and has demonstrated the presence of several anomalies of possible archaeological interest along with a large amount of ferrous, agricultural activity in the form of ploughing, some trends of uncertain origin and a modern service. The site is heavily disturbed by numerous field subdivisions and a large amount of ferrous material. Apart from some small sub-oval pits or possible short sections of ditch, very few anomalies of archaeological potential have been identified in these areas; the anomalies identified are of uncertain origin and they have been interpreted as being of possible archaeological interest, however, it is possible that they relate to agricultural activity or geological processes.