Downham Market Signal Box is a Grade II listed building in the King0s Lynn and West Norfolk local planning authority area, England. First listed on 26 April 2013. Signal box.
Downham Market Signal Box
- WRENN ID
- heavy-hearth-autumn
- Grade
- II
- Local Planning Authority
- King0s Lynn and West Norfolk
- Constituency
- South West Norfolk MP: Terry Jermy (Lab)
- Country
- England
- Date first listed
- 26 April 2013
- Type
- Signal box
- Address
- Downham Market Signal Box, Downham Market Railway Station, Kings Lynn and West Norfolk, King's Lynn and West Norfolk, PE38 9EN
- OS grid reference
- TF 602 032
- Coordinates
- 52.60379, 0.36538
- Source
- Historic England listing
Description
Downham Market Signal Box is a signal box built for the Great Eastern Railway in 1881. It has a timber construction and a slate roof covering. The signal box is located to the south of the station, on the west side of the railway tracks, and has a rectangular plan.
The exterior features a pitched roof with exposed rafters at the eaves. The bargeboards on the north gable end are notched, while those on the south end are plain. It sits on a brick plinth and is clad in horizontal timber painted in green and yellow. The locking room is lit on the east side by a group of three original horizontal, four-light windows with vertical glazing bars and is accessed from the north side through an original timber door. The upper operating room is illuminated on three sides by large original sliding windows with vertical timber glazing bars, including five four-light windows on the east side and three three-light windows on the north and south sides. Access to this room is via a timber staircase on the north side, through a timber door with a glazed upper panel that is not original.
Inside, the signal box retains its 1881 Saxby & Farmer rocker frame. A false ceiling has been added, and secondary glazing has been fitted.
Local climate
Downham Market Signal Box sits in a drier-than-average part of the UK, with an average of 700 mm of rain a year. This makes it drier than 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 92% of listed buildings.
It experiences an average of 29 freeze-thaw cycles a year, fewer than 67% of listed buildings. Of these, 15 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.
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- No EPC on record for this property
- No sale records on file
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- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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