Evaluation by G N Hayman for SCAU and G U Projects, on behalf of the North Surrey Water Co, prior to reservoir enlargement. Two large pit-like features were found, cut by a modern trench so that only one edge of these features was uncovered. Their fill was disturbed chalk and contained a number of Roman sherds of the 2nd century AD. It is thought that the site could represent chalk quarrying activity.

Noted by J Austin that he recovered over 100 small sherds of RB pottery from the site before the excavation noted in the last Collections (vol 81).

Evaluation of part of proposed route of the A31 Runfold Diversion and Blackwater Valley Route by G N Hayman for SCAU and SCC (County Engineer's department). One large ditch containing a few fragments of 3rd or 4th century AD pottery and four undated gullies were uncovered.

Excavation by J Harte and H Waterhouse for Bourne Hall Museum and NAS [now EEHAS] in the bed of the lake which had become dry. Preliminary examination in 1990 produced 38 1st to 3rd century Roman coins from one sector. A trench indicated that dredging had removed most material above the natural Thanet Sand. Gravel-filled pockets in the sand were however found to contain animal bones and IA, RB or Saxon pottery. Various walls, mostly presumably earlier retaining walls for the lake bank, were also noted. (265). It may be suggested that the Roman coins were offerings at the original spring.

Excavation following on from evaluation in 1991, in advance of the Runfold diversion, part of the Blackwater Valley Route, by Graham Hayman of SCAU for SCC. A number of prehistoric pits, some possibly used in association with food preparation, were recorded. A provisional examination of the associated pottery has identified sherds of Bronze Age and Iron Age date. A number of Roman features included pits and ditches, one of which was possibly part of an enclosure. Associated pottery appeared to include early and late Roman material. (272

Excavation following on from evaluation in 1991, in advance of the Runfold diversion, part of the Blackwater Valley Route, by Graham Hayman of SCAU for SCC. Some prehistoric finds were made, but no contemporaneous features were discovered. Features of Roman date were recorded, including small pits and ditches and a small four post structure, as well as part of a large enclosure ditch. Provisional examination of the associated pottery suggests occupation dates to the early Roman period.

Evaluation trial trenching by S P Dyer for SCAU and Alchemy Ltd located no features or stratigraphy but recovered one sherd of IA date and pottery and tile of Romano-British and medieval date.

Evaluation by trial trenching in advance of construction of the M25 service station, by Graham Hayman of SCAU for the Department of Transport, revealed concentrations of 13th century pottery associated with areas of burning, thought to indicate the production of Limpsfield ware; further excavation was recommended. Two sections, one either side of the M25, were also dug through the London-Lewes Roman road and variations in construction were noted. Two areas, one either side of the motorway, were subsequently excavated by Graham Hayman of SCAU for English Heritage.

Two seasons of excavation were directed by G H Cole for SHAHT. There was evidence for earlier prehistoric occupation (worked flints) and late Iron Age occupation and possibly related iron working (pottery and slag). Parts of possible buildings of the 2nd/3rd centuries were identified and there was late RB material including part of a jet finger ring with a monogrammed cross. No evidence was found for medieval occupation but the site had evidence for a post-medieval tanning industry known from documents to date c l596-1851.

A watching brief on groundworks at the Town Hall and some excavation was carried out by P M G Jones of SCAU for Spelthorne Borough Council. This confirmed that the building lay over medieval and Roman near-shore muds and silts which were sealed below 16th-17th century levels, probably representing foreshore reclamation. A reed peat filled feature of 15th century date was recorded, which contained numerous cut offs of wood and scraps of leather. The earliest buildings on the site appear to be late 15th or 16th century in date.