Three archaeological monitoring visits were made by Colchester Archaeological Trust during the groundworks for the new Parkside Office Development at the University of Essex Wivenhoe Park campus, Wivenhoe Park, Colchester. <1> The removal of the topsoil from the area of Block C and from the car park to the north-east of Block C was carried out under intermittent archaeological supervision. The footprints of blocks A and B and the associated roads and car parking were examined after they had been excavated. The footprint of Block B and the roadways were partly obscured. However, the edges of the excavations were still observable and where the footprint of Block A remained exposed no archaeological features were observed. Across most of the development area, a dark grey/brown clayey-silt topsoil (L1) directly overlay natural sand and gravel (L3). In the south-western corner of the development area (Block C), a medium brown clayey-silt colluvium (L2) was stratified between the topsoil and the natural alluvial clays and gravels (L3). In the northern corner of Block B, a large feature (F1, c.15m x 7m) with a silty-sand fill was observed cut into the natural sand/gravel/clay (Plate 1). However, based on the size and fill of F1 and its location on the valley slope of the River Colne, it is probable that this feature is an infilled water channel. Three sherds of pottery and a piece of clay pipe stem were recovered during the excavation of the piling mat for Block C. One of the pottery sherds (18g) can be identified as a Colchester-type ware and is most probably of 15th-16th century date. This sherd is of the same fabric and date as a significant quantity of medieval pottery which was collected from an area 40m to the south-west during the infrastructure enabling works watching brief (CAT Report 638, 18). <2> This pottery is thought to be derived from a nearby medieval domestic site, occupied in the 13th-14th centuries. The other two sherds (17g) are both post-medieval red earthen ware, which broadly date to the period of the 16th/17th-19th century. One is from a close form with external glaze, the other is from the rim of a bowl. The clay pipe stem piece (4g) is not closely dated, but the bore suggests a c. 18th century date. In addition, a possible boundary marker was observed in the trees to the north of the development area.