Excavation and site observation by P M G Jones for SCC and McKay Securities in advance of redevelopment examined a site at the confluence of the Thames and the Colne (as it existed from the late RB to the end of the Medieval period). Prehistoric peats and clays were found, cut by a late 1st or early 2nd century RB ditch containing leather offcuts and articles; any other RB levels must have been destroyed by later flood action .

Excavation by M Curtis for WARG in advance of proposed redevelopment uncovered early post-medieval to 19th century deposits. (235, 239

Suggested by T E Evans that surface excavations, previously interpreted as iron ore workings, were formed by digging for ballast for construction of railway track. (SIHG 47)

Report on detailed fieldwalking of 96ha (237 acres) by S P Dyer and Judie English for the SyAS Surrey Historic Landscapes Project Team. A thin scatter of worked flint was found throughout the area; mostly Neolithic with some Mesolithic and some BA. Sherds of Neolithic and BA pottery were also found. Aerial photographic evidence shows that the higher ground around Bocketts Farm is covered by a Celtic field system, perhaps to be associated with the known occupation site at Hawks Hill, but no Iron Age pottery has yet been found.

Examination and recording by E Crossland for LDLHS of the Howard family vault. 23 coffins were found, the earliest dated (probably) 1743 and the latest 1857. (251; see also review in SyAC 81, 193)

Report by A G Crocker and Glenys Crocker that clearance of vegetation on the site, carried out during the winter, has revealed previously hidden bedstones, edge runner stones and water wheel pits.

Report by I West of black glazed pantiles of a type produced late 18th–early 19th century. (250)

Evaluation by trial trenching in advance of redevelopment, by P M G Jones of SCAU for J P Whelan Ltd, located 18th and 19th century foundations of Mayes Place, but no evidence for earlier occupation.

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.

Observation of works within the Cage by S P Dyer for SCAU and the Hancock Ward Company located two floor levels, but the lowest is thought to have been not more than 100 years old. There were no other discoveries of archaeological interest. (279)