London Coal Duty Marker on County Boundary About 140 Metres South of Road is a Grade II listed building in the Three Rivers local planning authority area, England. First listed on 3 October 1985. Marker.

London Coal Duty Marker on County Boundary About 140 Metres South of Road

WRENN ID
pale-stone-pine
Grade
II
Local Planning Authority
Three Rivers
Constituency
Ruislip, Northwood and Pinner MP: David Simmonds (Con)
Country
England
Date first listed
3 October 1985
Type
Marker
OS grid reference
TQ 086 922
Coordinates
51.61818, -0.43136
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 county boundary about 140 metres south of the road in a playing field, was erected in 1861. It was cast by H. Grissell at the Regents Canal Ironworks. This cast-iron square pier stands one and a half metres high and is painted white, featuring chamfered corners and a pyramid top. The necking displays the City of London crest, and there is raised lettering on the front face of the shaft that reads '24 and 25 Vict. Cap 42'. This marker indicates the extent of coal duty to the boundaries of the Metropolitan Police District.

Local climate

London Coal Duty Marker on County Boundary About 140 Metres South of Road sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 91% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% 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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  • 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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