Excavation by Judie English and K D Graham for WAAC in advance of the construction of the relief road indicated that the land in this area was under cultivation prior to the 19th century. Finds included medieval and later sherds and a trade token issued by Thomas Lusher of Chiddingfold in 1668. (224)

Excavation and observation by K D Graham for FDMS in advance of redevelopment. A few RB and medieval sherds were found in trial trenching, and several pits and ditches of late to post-medieval date were observed in development. One large ditch running north-west–south-east may be part of hastily-erected Civil War defences. It had apparently been rapidly backfilled, and contained pottery consistent with a mid-17th century date. (227)

Resistivity survey by FDMS, reported by K D Graham. Results seemed to indicate an 8m wide ditch running east to west to the south of the south front of the Castle and turning north round its east side (fig 2). It is probably the dry ditch referred to in medieval documents. Three possible structures were also located: one east of Fox's Tower; one possibly a turret on the curtain wall and one near the existing gatehouse. (224)

Further work on site was carried out by G H Cole for Surrey Heath Group of SyAS. A further length of a ditch seen in 1983 was Located; it contained several sherds of grass or chaff-tempered pottery. Also found was evidence for a well-preserved timber post and plank building of AD 1250 to 1350 replaced by a late 14th century post-built structure (partially seen in 1984/85). A complete wooden barrel, set in puddled clay, was thought to underlie the levels dated 1250-1350, and beneath it was found a complete wooden bowl. More information was gained about the 17th century tavern (?

Site watching and rescue excavation by R J Poulton and P M G Jones for SCC and Greenham Construction Materials Ltd revealed some prehistoric features and scattered medieval pottery. In one area three interlinked ring gullies were planned and sampled and several sherds of associated pottery were recovered. This appears to have been a MIA settlement site.

Observation by D W Williams and HAG of a redevelopment, located further features of archaeological interest. Two oxen were found buried in a pit probably of 18th century date or later. A medieval rectangular rubbish pit and a deep circular feature interpreted as a cess-pit of c.1400 were also found. Many finds were made, some with the assistence of metal detector users, including the first RB coin noted from Reigate. (224)

Rescue and salvage excavation by D W Williams for HAG was the first examination- of the archaeology of the east side of Bell Street. Three medieval features were found, all containing similar pottery suggesting a date in the second half of the 12th century. This was further confirmed by a cut halfpenny of Henry II (1158-80) found in the fill of a sub-rectangular pit, possibly a cesspit, above its base, which was formed by a group blackened stones.

Scatter of 13th/14th century pottery and tile with blocks of Lower Greensland, Bargate and Chalk found by P M G Jones in field walking. More pottery and large amounts of medieval and post-medieval tile and brick were found at TQ 063 524. No good evidence for pottery manufacture was found but Crockery Lane may be linked in some way to a family of potters recorded in the Chertsey Abbey cartularies. (226)

Small-scale excavation by R J Poulton for SCC and /Guildford Borough Council in advance of floodlighting by the keep. No features were noted but Medieval pottery was the first to be recovered from the mound.

Scatter of I3th/14th century pottery and roof tile found in field walking by P M G Jones. A second similar concentration, with blocks of Bargate stone, was located some 80m to the south-east at SU 946 495. (226)