London Coal Duty Marker on District Boundary About 350 Metres North East of Wild Farm is a Grade II listed building in the Hertsmere local planning authority area, England. First listed on 12 August 1985. Marker.

London Coal Duty Marker on District Boundary About 350 Metres North East of Wild Farm

WRENN ID
guardian-brick-wren
Grade
II
Local Planning Authority
Hertsmere
Constituency
Hertsmere MP: Sir Oliver Dowden (Con)
Country
England
Date first listed
12 August 1985
Type
Marker
OS grid reference
TL 176 014
Coordinates
51.6993, -0.2992
Source
Historic England listing

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

Description

The London Coal Duty Marker, located on the district boundary about 350 meters northeast of Wild Farm in Radlett, dates back to 1861. It was cast by H. Grissell at the Regents Canal Ironworks. This marker is a cast-iron square pier with chamfered corners and a pyramid top. It remains unpainted and features the City of London crest on its necking. The front face displays the inscription '24 + 25 VIC CAP 4'.

Local climate

London Coal Duty Marker on District Boundary About 350 Metres North East of Wild Farm sits in a drier-than-average part of the UK, with an average of 710 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 87% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% 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.

More on this building

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  • Detailed attributes — period, style, materials, features
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  • 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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Nearby listed buildings

  1. Stable Range to South of Harperbury Hospital Grade II 250 m
  2. Farmhouse at Wild Farm, known as White House Grade II 358 m
  3. The Mansion Grade II 727 m
  4. St Botolphs Grade II* 810 m
  5. London Coal Duty Marker on North Side of Road, Near Drive to Alfriston Grade II 989 m
  6. London Coal Duty Marker on Verge Near Number 67 Grade II 1.0 km
  7. The Gardens Cottage and Kitchen Garden Wall Grade II 1.0 km
  8. Harper House Grade II 1.3 km
  9. All Saints Pastoral Centre, Including Chapel Grade II* 1.4 km
  10. 4 and 5, Pound Lane Grade II 1.4 km