Evaluation by T Collie of SCAU on the site of the new Spelthorne fire station revealed shallow linear ditches and a pit, all of probable Iron Age date.
Watching brief by A Hood of FA revealed several possible ditches/gullies and two small undated pits or tree-throw holes. The majority of the ditches were on a north-west, south-east/north-east, south-west co-axial alignment, suggesting that they represent the remains of a former ditched field system. There was a general paucity of artefactual material from the ditches, although a single sherd of porcelain pottery from one of the fills could indicate that they date to the later medieval or post-medieval period. Two small sherds of possible Bronze Age pottery were recovered from a subsoil layer.
Evaluation by W Weller of SCAU recovered a number of oyster shells but revealed only features indicating modern disturbance.
Evaluation by S Watson of PCA revealed a culverted section of Sweeps Ditch but no finds or features of archaeological interest.
Watching brief of geotechnical works by A Turner of PCA revealed substantial ground disturbance probably caused by gravel extraction in the 1970s. Eight pits contained demolition rubble, some of which might have originated from Hyde House, a 17th century house that formerly occupied part of the site, although it is more likely that it represents material dumped in areas of gravel extraction. Three pits displayed deep deposits of natural brickearth, although their depth and the friable nature of the underlying gravel suggest that they too were redeposited after extraction.
Evaluation by S Ritchie of ASE revealed no finds or features of archaeological significance.
Watching brief by N Randall and R Poulton of SCAU revealed no archaeological features although a large sherd from an unusual Saxo-Norman spouted pitcher was recovered.
Excavation by K Welsh of OA. A small hengiform monument, of probable Late Neolithic date, was the earliest feature revealed. Parts of a Late Bronze Age/Early Iron Age field system were also recorded, with evidence for repeated modifications suggesting the relative longevity of the system. The hengiform monument appears to have been incorporated into the field system, rather than being overlain by it, indicating that it was still visible at this time. Evidence for settlement activity contemporary with the field system was also recorded.
Evaluation by N Taylor of OA revealed features associated with the early 20th century development of the site, but no finds or features of archaeological interest.
Evaluation by J Pine of TVAS revealed two ditches, one undated and the other tentatively dated to the Roman period. A number of trenches were targeted over cropmarks, but no features that correlated with the cropmarks were revealed.