Evaluation by K Krawiec for ASE confirmed the presence of the former castle moat, although the edge of the moat was not observed. A borehole survey confirmed that 19th century backfill made up a large proportion of the material infilling the moat, although the primary fills included an in-situ organic deposit. The lower deposits did not yield reliable material for dating, but a layer of leaf litter returned a date of 1670 cal AD to post-1950 cal AD (280-10 cal BP).

An archaeological evaluation by G Anelay of WSA revealed two tree-throw hollows and a scattering of medieval to modern artefacts, but no features of archaeological interest.

Evaluation by T Munnery of SCAU revealed residual Mesolithic and Neolithic flintwork, a number of probable Late Bronze Age/Early Iron Age ditches and medieval or post-medieval quarry/dene holes. The character of the ditches suggests they form part of a field system rather than a settlement enclosure.

Evaluation and subsequent excavation by G Dawkes of ASE along the c17km route, from Buckland Pumping Station in the west to the Outwood Reservoir in the east. Two sites of particular archaeological significance were identified: a prehistoric and Roman site in the vicinity of Buckland village, immediately south of the A25, and a medieval site located to the north of Buckland, adjacent to Glebe House on Rectory Lane.

Evaluation by J Aaronson of CA revealed two previously unidentified phases of castle development including part of a substantial footing within a deep-sided cut of 13th century date and a second phase represented by wall bases constructed from rough Reigate stone and chalk blocks. The presence of a brick hearth within the body of one of these walls suggests a later 14th or 15th century date, pre-dating the standing remains and lying to the south of the previously understood limits of the castle.

Evaluation by T Munnery of SCAU. Medieval features comprising pits, postholes, a well and a possible buried soil were revealed. Two of the features and the buried soil may be as early as the late 12th or early 13th century. A relatively large number of struck flints, mostly of Mesolithic but also Neolithic date were recovered, mostly from one location in a limited-sized test pit. Sherds of Roman and Saxon pottery recovered are likely to be residual and unlikely to indicate that significant evidence from these periods is present on the site.

Test pitting by C Hayward of SyAS. Nineteen test pits were excavated in a central band of the parish with two located in Little Bookham. Evidence of early medieval activity was recorded in Church Street with finds of medieval pottery clustered around the church. Sherds of Roman pottery were found in two areas to the east and north-east of the church and Bronze Age pottery and struck flint were recorded from a Little Bookham pit.

A small excavation by L Spencer of SyAS on the posited site of Bookham Courte revealed a flint and tile demolition layer overlaid by medieval pottery and chalk and greensand blocks, the latter with worked examples. (Bulletin 448)

Geophysical survey by T Desalle and A Bateman of Stratascan revealed several widely spaced curving parallel linear anomalies interpreted as medieval/post-medieval furrows and a linear anomaly that could indicate the presence of a ditch.

Evaluation by S Stevens of ASE revealed a Roman gully and two further undated gullies at the northern end of the site, possibly part of a field boundary or enclosure. The presence of a humic garden soil in the north-western part of the site correlates with the area of a small enclosure depicted on late 19th and 20th century maps and suggests that this may have been used for domestic cultivation. A small assemblage of artefacts including prehistoric flintwork, medieval and post-medieval pottery and ceramic building material was recovered from the overburden.