fA detailed magnetometer survey was undertaken by Archaeological Surveys Ltd at the request of Border Archaeology on the site of a proposed anerobic digestion biogass plant at Wormslade Farm near Clipston in Northamptonshire. The results of the survey show that the site contains a number of weakly positive linear anomalies, some with curvilinear or rectilinear elements. However, they are widespread, weak, short, fragmented and incoherent and their origin cannot be determined. A number of pit-like responses can also be seen, with a concentration in the south eastern corner of the site, but, as with the linear anomalies, it is not clear if they relate to naturally or anthropogenically formed features. Evidence for former ridge and furrow, a field boundary, possible land drains and an infilled pond has also been located.