Programme of investigation comprising evaluation, excavation and a watching brief by D Saxby of MOLA. Evaluation revealed evidence of Iron Age and Saxon activity in three areas of the site, with the subsequent excavation targeting these areas. Within the middle of the site a 0.4m-thick layer of sand was revealed that produced 1544 Early Mesolithic flints including microlithic flint points, microburins and at least four core adze fragments and a scraper (c 9600–7600 cal BC).
Evaluation by G Dawkes of ASE did not reveal any finds or features of archaeological interest.
Historic building assessment by J Thomson of WA of a former pumping station and adjacent cottage original to the c 1900 construction of the sewage works.
Evaluation by P Jones of SCAU revealed a series of gullies most likely to represent bedding trenches of late 19th/early 20th century date, a late post-medieval to modern animal burial pit, and recovered residual struck flints and an early medieval sherd.
Evaluation by S Watson of PCA revealed only modern features, the majority of which adjoined and were related to a late Victorian former cottage.
Watching brief by K Bower of PCA did not reveal any finds or features pre-dating remains of Victorian glasshouses that had stood on part of the site until the 1950s.
Evaluation by T Dawson of TVAS within the Scheduled hillfort revealed evidence of modern garden activity, but no finds or features of archaeological interest.
Watching brief by T Dawson of TVAS within the Scheduled hillfort revealed a recently dried-up stream, but no finds or features of archaeological significance.
Evaluation by D Freer of WA within the Scheduled hillfort revealed evidence of modern activity but no finds or features of archaeological interest.
Watching brief by R Poulton of SCAU during the excavation of two test pits within the Scheduled Oatlands Palace close to the location of previous investigation in the 1960s. The watching brief did not reveal any finds or features of archaeological interest, but did clarify the depth at which archaeological remains are likely to be present and at risk from developmental impact.