Programme of photographic historic building recording by H Green of ASE. The hotel is situated on land that was occupied by a building from 1842. The present building retains elements of this structure, which has been substantially altered. The extensive alterations include the addition of a mock Tudor frontage to the east between 1914 and 1934 and the construction of a large function suite with guest rooms above to the west in the later 20th century. The two outbuildings built between 1842 and 1869 have been converted for domestic use.

Watching brief and building recording by Dr M Shapland of ASE. Several archaeological features were recorded relating to the 19th and early 20th century development of the adjacent 16th century house.

Evaluation by A Chapman of AAL (Allen Archaeology Ltd) revealed a series of walls and pits probably related to former late 19th to later 20th century terraced housing on the site. No significant archaeological features or finds were recorded.

Historic building survey by Dr E Oakley for AAL (Allen Archaeology Ltd) revealed an L-shaped block of one- and two-storey brick buildings, with four broad phases of development identified. The earliest component represented buildings established c 1868 as part of the Filmer and Mason Ironworks. By 1881 the site was known as Church Acre ironworks and a number of small extensions were added in the period 1881–96. The ironworks ceased operation in the 1920s and the site was later occupied by the army.

Excavation by S Nelson and D Hartley of EEHAS. The remains of some of the buildings associated with the gunpowder mills that operated along this upper reach of the Hogsmill river during the 18th and 19th centuries, until the mills closed in c1875, were revealed. Work took place in the area of the Corning House and Mills buildings shown on the 1866 OS map. A plan of 1863 notes those furthest downstream as the Incorporating Mills. Recording concentrated on the Incorporating Mills site where works exposed stretches of brickwork in the left bank of the river.

Strip, map and sample by R Brown of OA revealed the truncated remains of 19th century railway structures comprising a turntable, a small building and possible platform edges associated with the Hampton Court branch line. The structures were sited on reworked and mechanically compacted gravels although a full sequence of undisturbed Pleistocene gravels and associated fluvial/alluvial deposits was recorded to the west of the structures.

Evaluation by W Weller of SCAU revealed a narrow gully of modern date and confirmed the location of a pond shown on 19th century maps.

Evaluation by S Maher and R Humphry of PCA, continuing work from 2012, revealed pits and postholes likely to relate to domestic occupation that fronted Monument Hill, together with garden walls and boundary features all of 18th or 19th century date and clearly represented on contemporary maps.

Two phases of evaluation by S Mounce of WA in advance of flood protection, landscaping, tip remediation and redevelopment alongside the Hoe Stream. The first phase revealed a significant depth of alluvial deposits, late 19th and early 20th artefacts likely to have been washed up and deposited by the Hoe in a trench closest to the modern course of the stream, but no deposits of archaeological interest. The second phase revealed alluvial layers within all of the trenches, confirming that the site historically lay within the flood plain.