This is the archive report on archaeological trial-trenching at Area S of the planned urban village at the Garrison, Colchester to locate the exact position of Berechurch Dyke. The work was carried out as part of a programme of archaeological investigation of areas of alienated land, acquired by Taylor Woodrow for residential development. The fieldwork on Area S was necessitated by design requirements for the installation of a new service close to the estimated course of the Berechurch Dyke and the creation of a green ‘corridor’ in the development to preserve the surviving remains of Berechurch Dyke. Three 50m x 0.5m trial-trenches were excavated; two large ditches were observed in two of the trenches and a single large ditch representing the remains of a rampart was observed in the third trench as the course of the dyke changed angle across Area S. Finds from the trial-trenching included a very small amount of Roman pottery and tile as well as a single sherd of prehistoric pottery. <1>