Evaluation by S Holden of PCA revealed a single feature containing no datable material, and two parallel brick-built walls dated to the late 18th/early 19th centuries, which are likely to correspond to a building shown on the 1870 OS map. Evidence of prehistoric activity, in the form of possible struck flint and pieces of burnt flint, together with sherds of prehistoric, possibly Iron Age, pottery, was found residually across the site with artefacts of medieval and post-medieval date.

Watching brief maintained by G Potter of CA during the excavation of a pipe trench, and associated works, along the line of Speer Road. Two residual struck flints were recovered, but otherwise the only evidence of past activity was represented by occasional 19th and 20th century finds in reworked soils and other disturbed ground.

Monitoring by N Adam of AC Archaeology during the development of new recreational facilities and associated roads and car parking. A moderate quantity of burnt flint and a small number of worked flint pieces (likely to be of Mesolithic or Neolithic origin) were recovered from topsoil and subsoil horizons, but mixed with modern debris

Geoarchaeological monitoring by C Green of ArchS in advance of construction of a replacement house. The monitoring allowed recording of the nature of the sub-surface sediments at the site. No finds were detected in situ, but a single impact flint flake was recovered from the spoil.

Excavation by S Smith as part of research for a television documentary series entitled ‘Tywysogion’ on the Welsh princes c 900–1420. Documentary research indicated that Tatsfield was in the possession of Rhodri ap Gruffudd – brother of Llywelyn ap Gruffudd (Prince of Wales until his death in 1282) – and his descendants during the 14th century. The work consisted of the excavation of a number of test pits on possible earthworks, identified from aerial photograph and field survey observations, suggested as the remains of the medieval manor house of Tatsfield.

Evaluation by H Clough of PCA in advance of the construction of a workshop extension revealed two ditches of probable Bronze Age origin, a palaeochannel which may be prehistoric, medieval agricultural features, a late 18th or early 19th century wall, and residual burnt and worked flint, abraded Roman pottery and a piece of unabraded Saxo-Norman pottery. Subsequent monitoring of two geotechnical test pits within the proposed footprint of the workshop revealed only modern deposits.

Evaluation by B Hennessy of WA prior to residential redevelopment. No features of archaeological interest were revealed, although a small assemblage of prehistoric flint flakes recovered from subsoil deposits is indicative of general activity in the area.

Excavation and watching brief by P Thrale of MoLAS following evaluation work in 2003. Natural chalk solution hollows and a single irregular pit were recorded during the excavation, sealed by a layer of possible agricultural soil, which contained prehistoric flintwork and medieval and post-medieval pottery. No finds or features were observed during the subsequent watching brief.

Ongoing research excavation by P Harp of Plateau where significant quantities of worked flint, together with some prehistoric pottery, are still being found.

Phase I of a large-scale evaluation by A Ford of OA prior to the submission of a planning application for residential development. A small number of worked flints were recovered, suggestive of low-level early prehistoric activity in the general vicinity. Of more significance was evidence of a Late Iron Age to 1st century Roman settlement, with indications that an intensification of activity might have occurred towards the end of this period.