An excavation was carried out by Colchester Archaeological Trust on the line of the Berechurch Dyke, in advance of the construction of a new access road and associated services across part of the Berechurch Dyke.<1> The topsoil (KL1) and buried ploughsoil (KL2, which is re-worked cover loam) together varied between 400mm and 600mm in thickness. The excavation located the dyke ditch over its full width. However, only a small section across the upper part of the ditch was investigated. An east-west trench, 0.5m wide, was hand-excavated into this fill at right-angles to the line of the dyke. The upper fill (KL3) consisted of an orange-brown silty sand up to approximately 0.5m in thickness. A small quantity of finds was recovered from this layer (KL3(2)), of which the latest-dated pottery and CBM is medieval and medieval to post-medieval in date. There were also a few abraded sherds of Roman date which are residual in this context. This layer sealed a medium orange-grey silty sand (KL4) which extended across the whole width of the dyke ditch. Only about 100mm of this fill could be excavated. A single sherd of medieval/early post-medieval Colchester ware pottery was recovered and two (joining) abraded flint-tempered prehistoric sherds of probable Neolithic or Bronze Age date (KL4(3)). Part of the dyke bank, or an area of natural sand beneath the former bank, was located on the western edge of the excavation. A line of five pits or post-holes on the western side may represent part of a timber revetment fronting the dyke bank, although a date for the post-holes later than the dyke cannot be excluded. Finds were recovered from the fill of one (KF4). These consist of three very small, abraded sherds (probably from the same vessel) which appear to be in a hand-made sandy fabric and are probably of Middle Iron Age or Late Iron Age date (c.4th century-1st century BC). There is some evidence that a large post-medieval ditch or hollow-way may have followed the line of the dyke ditch. Only a small quantity of finds was recovered, from three features (KF1, KF2, KF5). The finds consist of pottery, ceramic building material (CBM), burnt stone and stone. The date range of the pottery spans the earlier prehistoric (Neolithic-Bronze Age), later prehistoric (Later Iron Age), and the Roman and medieval periods. The small quantity of burnt flint is not closely dated but is probably of prehistoric date.