Hms Dryad (Southwick House) is a Grade II listed building in the Winchester local planning authority area, England. Country mansion.

Hms Dryad (Southwick House)

WRENN ID
fossil-cloister-heath
Grade
II
Local Planning Authority
Winchester
Constituency
Fareham and Waterlooville MP: Suella Braverman (RUK)
Country
England
Type
Country mansion
Address
Hms Dryad (Southwick House), Southwick and Widley
OS grid reference
SU 633 087
Coordinates
50.87471, -1.10158
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

HMS Dryad, also known as Southwick House, is a country mansion built in 1843 to replace a house that was constructed in 1800 but was destroyed by fire in 1840. Designed by S Howell, the building features stucco walls and a roof that is concealed by a parapet. The symmetrical south front elevation has slight projections on either side and a central bow, standing three storeys tall with a window arrangement of 2.1.3.1.2. The ground floor is rusticated and includes rusticated quoins and architraves around the windows, which have segmental and triangular pediments on the first floor, along with an eaves cornice supported by console brackets. The windows are sashes set in reveals. A continuous verandah on the ground floor is supported by Ionic columns.

The east elevation mirrors this symmetry, also three storeys high with a window arrangement of 1.3.1, and features a porte-cochere with four Ionic columns. On the west side, there is a two-storeyed service wing with a window arrangement of 1.5.1. This site served as the headquarters of General Eisenhower and was the location for planning the D-day invasion from 1943 to 1944. It is noted that a large map, specifically commissioned for this purpose, remains in place, covering a wall in one of the ground floor rooms.

Local climate

Hms Dryad (Southwick House) receives an average of 810 mm of rain a year. This makes it drier than 52% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.

It experiences an average of 19 freeze-thaw cycles a year, fewer than 79% of listed buildings. Of these, 8 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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