Black Holt former Atomic Bomb Store: Testing Building is a Grade II listed building in the East Lindsey local planning authority area, England. First listed on 24 February 2020. Testing building.

Black Holt former Atomic Bomb Store: Testing Building

WRENN ID
night-turret-linden
Grade
II
Local Planning Authority
East Lindsey
Constituency
Louth and Horncastle MP: Victoria Atkins (Con)
Country
England
Date first listed
24 February 2020
Type
Testing building
Address
Black Holt former Atomic Bomb Store: Testing Building, Langrick Road, Coningsby, Lincolnshire, LN4 4RT
OS grid reference
TF 243 576
Coordinates
53.10194, -0.14478
Source
Historic England listing

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

Description

Black Holt former Atomic Bomb Store: Testing Building is a mounded and reinforced concrete structure from the 1950s, which was converted into a Safe Command Post in the 1980s. The building is buried and has a rectangular plan oriented north-south.

The exterior is mostly hidden beneath earth bunding, with double-leaf steel doors visible at both the northern and southern ends.

Inside, the building consists of a series of rooms finished with painted render, all accessed from a spine corridor that runs the full length of the structure. This corridor leads to various spaces including testing and dressing areas, an office, storage rooms, and plant rooms. Notably, a safe remains in place in one of the side rooms.

Local climate

Black Holt former Atomic Bomb Store: Testing Building sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 76% of listed buildings.

It experiences an average of 27 freeze-thaw cycles a year, fewer than 71% of listed buildings. Of these, 13 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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