Between the 15th and 26th July 2019, Oxford Archaeology East (OA East) undertook an archaeological evaluation on land east of Nayland Road, Great Horkesley, Essex (TM 9819 2940). A total of 53 trenches were excavated. The fieldwork identified archaeological remains in 26 of the trenches, with a greater concentration of features on the sloping ground forming the eastern half of the site and a sparser concentration on the plateau to the west. Residual worked flints were recovered, suggesting a background of prehistoric activity in the area, but no features were found that could be claimed as being of this period. A previous geophysical survey of the site (Magnitude 2019) suggested the presence of firing or burning activity along the base of the slope in the southeastern part of the site, and a trench across one of these anomalies revealed evidence for a demolished, brick-built brick kiln and the in situ remains of a later brick-built structure which possibly represents either a brick kiln or ancillary structure. Analysis of bricks from these structures indicate an early 18th to early 19th-century date for this activity. Evidence of a field system of 19th-century origin was revealed reflecting limited usage of the area as heavily wooded heathland until its enclosure in 1815. Several ditches were found to contain early 19th-century tile drains, appearing to have been part of a program of post-enclosure agricultural improvement. Eight sub-circular pits were also revealed with charcoal rich fills, distributed across the site with no discernable pattern or grouping. None of these features contained any securely datable finds with only a single fragment of burnt flint recovered. No firm conclusions about their function were drawn, and while a prehistoric origin cannot be ruled out, it is possible that these pits represent much later management and clearance of the heath.