Excavation by P Jones of SCAU adjacent to areas previously investigated revealed evidence of activity spanning the early prehistoric to medieval periods. The earliest purposely dug feature was a large and deep banana-shaped pit that contained over 3000 struck flints of wholly Mesolithic date. Evidence of Bronze Age activity revealed across the site was of long duration, although probably episodic.

Evaluation by D Milbank of TVAS in advance of the creation of a pond, recovered a sherd of medieval or possibly Roman pottery from subsoil, but did not reveal any features of archaeological interest.

Three phases of archaeological investigation were carried out by S Ford, J Pine and J Lewis of TVAS in advance of possible future extraction on this site. The first phase comprised the excavation of 249 trenches and revealed a range of deposits of Late Bronze Age, Roman, Early Saxon, Late Saxon and medieval dates, within an area coincident with a cropmark enclosure complex; a small number of gullies possibly dating to the Neolithic or Bronze Age to the west, and in-situ Mesolithic artefacts and a Mesolithic pit.

Landscape survey and historic assessment by P Stevens of SHAHT. A number of landscape features were catalogued, including evidence for the former moated site. A resistivity survey by G James of SHAHT, conducted to identify the remains of the earlier medieval and Tudor manor houses, provided inconclusive results.

The first phase of evaluation of this site by R Lambert of SCAU revealed a variety of features dating to the post-medieval, Saxon and possibly prehistoric periods. The features largely comprised ditches or elongated pits. A second phase of evaluation to the south revealed deposits of post-medieval, medieval and prehistoric date comprising ditches, another elongated pit, and a number of smaller circular pits.

Evaluation by R Lambert of SCAU revealed a variety of features and deposits dating to the prehistoric, medieval and post-medieval periods. A ditch containing later Bronze Age flintwork was the earliest feature. The ditch contained a residual Mesolithic core, and a flint flake of Neolithic or Early Bronze Age date. Two joining pot sherds from a Late Saxon bowl were also recovered from a layer of post-medieval soil above the feature.

Evaluation by J Pine and A Weale of TVAS in advance of possible mineral extraction involved the excavation of 149 trenches. A high density of certain and probable archaeological deposits was revealed, with 60% of the trenches proving positive, although little cultural or environmental dating evidence was recovered from them. Where such evidence was present, the deposits reflected Early Neolithic and probable Middle to Late Bronze Age occupation, with prehistoric activity of other periods represented by a few pieces of possible Mesolithic flintwork, Late Neolithic and Late Iron Age pottery.

Evaluation by L Loe of OA comprising two trenches to inform the design of an extension on the south side of the church. Within the first trench, five inhumation burials were revealed with associated coffin fittings of the post-medieval period. The second trench revealed a further five inhumation burials, but these had no associated post-medieval coffin fittings and are thought to date to the medieval period. A linear cut feature pre-dating the burials was also revealed in this trench.

Watching brief by K Johnson of CA revealed alluvial silt sealing successive layers of demolition material associated with the dismantling of the abbey. No in-situ structural remains were encountered in an investigation that by design did not proceed through the complete sequence of deposits in some areas. However, a number of noteworthy finds were recorded, including twelve inlaid medieval tiles from the nationally significant Chertsey tilery, and a coin of 1603, which suggests that the demolition process on the site continued for some time following the Dissolution. (408)

Two phase evaluation by T Munnery of SCAU, prior to the construction of a new building at the Upper School and extension to the existing Coach House. A single pit of probable 13th century date was discovered at the Coach House site. Two late medieval or early post-medieval pits were revealed at the Upper School site, with indications of earlier activity in the immediate vicinity being noted within the finds assemblage. The Coach House development was calculated not to damage archaeological horizons, so no further work was recommended.