In August 2012 Oxford Archaeology (OA) carried out a field evaluation on land at Dunsfold park, Dunsfold, Surrey on behalf of Bio Group Ltd. The evaluation comprised machine excavation of 8 trenches 60m long and 2 trenches 25m in length, all with a width of 1.6m. The evaluation found very little in the way of significant archaeological remains. Agricultural furrows were identified crossing the site, generally from west-north-west to east-south-east, but the only archaeological features were one pit (or tree-throw hole) and a north-south ditch that was located crossing two trenches.