Excavation (1946-9, by T.K. Walls) of part of a 'native' farmstead of 1st century BC and 1st century AD, with residual material of late 5th and 4th century BC, reported by J.F. Cotton. Notable finds include 9 inscribed bone counters, (Britannia 8 (1977), 445 and fig 30). (145; report in SyAC 88, 1-42)

Excavation by S Nelson for Nonsuch Antiquarian Society in advance of redevelopment studied the remains of a mid-late 17th century timber-framed building. (167)

Probable pre-19th century well recorded (in December 1981) by M Exwood; the top metre was lined with bricks, with chalk blocks below this. The well was not cleared.

A trial trench by S Nelson for NAS [now EEHAS] revealed a small part of a flint rubble wall foundation and a gravel surface, possibly RB.

Excavation and site watching by R J Poulton and M G O'Connell for SCC and Epsom and Ewell Borough Council in advance of redevelopment. An undated chalk cellar and well were found aligned to West Street but not related to the most recent buildings on site. A substantial amount of RB tile and pottery (especially 2nd century) was found associated with a cobbled surface (?yard). (208; see this volume for report)

Trial excavations and observation by S P Dyer for SCAU and SCC (County Engineer's Department) in advance of road construction located only a few unstratified RB sherds.

Rough records located by J F Cotton of a c4m deep RB shaft or well dug out by treasure hunters.

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

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.

A watching brief on the laying of a water main along the northern boundary of the park was carried out by Rob Poulton of SCAU for Southern District Water PLC. No evidence for a suggested Roman road across the park was seen, but the drain from Nonsuch Palace was noted.