Report on a magnetometry survey, conducted to inform proposed residential development on land at Woodlands Drive, Colsterworth. A number of magnetic anomalies were recorded, concentrated in the south and east of the survey area. These anomalies were interpreted as the remains of several possible enclosures, a series of related linear features/ditches and a number of pit-like features, all of unknown date. Magnetic anomalies representing the remains of medieval ridge and furrow were also identified.