Wessex Archaeology was commissioned by St Edmunds Development Ltd. to undertake a detailed gradiometer survey over land at Ash Manor, Ash Green, Surrey (centred on NGR 490146, 150313). The aim of the survey was to establish the presence, or otherwise, and nature of detectable archaeological features ahead of the development of the site. The survey area consists of two fields bounded on the south and east sides by Ash Green Road, with a minor track to the west and surrounded by further fields to the north. The site covers a total area of 2.96ha, of which 2.2ha was surveyed. A small portion (0.76ha) of the site extent was un-surveyable due to additional fences within the survey areas restricting movement and large tractor parts at the edges of one field preventing access. The geophysical survey was undertaken on 30th April 2015. The detailed gradiometer survey has demonstrated the presence of magnetic anomalies that are of low archaeological interest. A possible former, modern field boundary has also been identified in conjunction with numerous faint linear trends of unknown origin. In addition, further anomalies associated with modern services and areas of superficial geology are also present.