In 2004 an evaluation (1) and an excavation (2) were carried out, by Oxford Archaeology and Wessex Archaeology respectively. In the eastern part of the site, a length of interrupted ditch dating to the Neolithic was found. This was interpreted as part of a Neolithic causewayed enclosure, the second such site found in the immediate area. Unlike the example c.280m to the south, this enclosure consisted of only a single ditch circuit. The ditch appeared to terminate at the northern end towards a natural break in slope. It curved inwards towards the south but extended beyond the limits of excavation. A section of ditch observed in a watching brief on a gas main to the south may represent the return of the circuit. If this is the case, the enclosure would be c.160m across. Two groups of post holes within the enclosure are thought to relate to the use of the site in the Neolithic. (2)

The latest ditch fill produced a RadioCarbon date of 1540-1120 cal BC (3069±35 BP, NZA-22277) (3)
Original reference given as (Ellis and Allen in Allen et al. 2008):
Ellis, C. and Allen, M.J., 2008, The excavated evidence, in Allen M.J., Leivers M. and Ellis C., Neolithic Causewayed Enclosures and Later Prehistoric Farming: Duality, Imposition and the Role of Predecessors at Kingsborough, Isle of Sheppey, Kent, UK, Proceedings of the Prehistoric Society 74, 282–88

A Neolithic causewayed enclosure with a single circuit, known as Kingsborough 2. It was discovered in 2004 during excavation by Wessex Archaeology prior to housing development. Only a small portion of this was exposed within the development area, but it seems to have a D-shaped plan opening over the scarp slope. No internal Neolithic features were identified. The ditch was generally steep-sided and flat-bottomed, and up to 1.70 metres wide and 1.20 metres deep. A small amount of pottery was retrieved from Kingsborough 2, and they concentrated in or near the bottom of the ditch. Iron Age and Saxon features were also present within the enclosure.
A further causewayed enclosure lies to the south (Kingsborough 1). The topography is significant in that Kingsborough 1 lies on the southern slope, below the crest, with a southerly aspect, and Kingsborough 2 is at the crest, and has a northerly aspect. (1-2)

The Kingsborough enclosures were included in recent research into the dating of early Neolithic enclosures.
A series of six radiocarbon determinations were determined from Kingsborough 2. The results indicated that the ditch was almost wholly infilled by the Middle Bronze Age. A chronological model constructed on the basis of the results suggests that Kingsborough 2 was constructed probably in 3710-3635 cal BC. The enclosure is estimated to have gone out of use in 3645-3435 cal BC. Overall use of the enclosure was found to have spanned up to 315 years, but was more likely to have been over the course of one or two generations.
The Kingsborough enclosures were both probably constructed in the 37th century cal BC or in the first decades of the 36th century cal BC, Kingsborough 2 probably being built earlier than 1. Both enclosures seem to have gone out of use in the 36th century cal BC if not before, and it is possible that both were used for only a generation or two. The sections and rapid natural silting observed especially at Kingsborough 2 may suggest that use-lives were even shorter. (3-6)

<1> Oxford Archaeology, 2004, Kingsborough Manor Phase 2, Stage 1, Eastchurch, Isle of Sheppey, Kent: Archaeological Evaluation Report (Unpublished document). SKE12296.

<2> Wessex Archaeology, 2005, Kingsborough Manor Phase 2 Stage 1, Isle of Sheppey, Kent: Assessment of Archaeological Excavation Results (Unpublished document). SKE17759.

<3> Wessex Archaeology, 2008, Kingsborough Manor, Phase 3 Stages 1 and 2, Eastchurch, Isle of Sheppey, Kent (Unpublished document). SKE31436.

<4> Allen, M.J., Leivers, M. and Ellis, C, 2008, Neolithic causewayed enclosures and later prehistoric farming: duality, imposition and the role of predecessors at Kingsborough, Isle of Sheppey, Kent, UK (Article in serial). SKE58365.

<5> Hammond J, 2007, How Kent's recently discovered causewayed enclosures impact on our understanding and interpretation of the Early Neolithic in the region (Article in serial). SKE58366.

<6> Alasdair Whittle, Alex Bayliss and Frances Healy, 2011, Gathering Time: Dating the Early Neolithic Enclosures of Southern Britain and Ireland (Bibliographic reference). SKE58367.