An archaeological evaluation was carried out at Theberton Hall Farm, Theberton, in advance of the construction of a proposed agricultural reservoir. Four trenches with a total length of 120m were excavated across the reservoir site which revealed the presence of a number of ditches, one of which yielded two sherds of medieval pottery, two pits and a possible posthole from which a single sherd of medieval pottery was recovered. The possible posthole suggests the presence of a medieval structure within the footprint of the proposed reservoir.
The other features were undated although one of the ditches is located on the line of a field boundary marked on early OS maps. Due to the leeched nature of their fills, two of the ditches are likely to be prehistoric in origin.