London Coal Duty Marker on county boundary on bank on east side of railway about 350 metres south of road is a Grade II listed building in the Hillingdon local planning authority area, England. First listed on 3 October 1985. Marker.

London Coal Duty Marker on county boundary on bank on east side of railway about 350 metres south of road

WRENN ID
tattered-gravel-swift
Grade
II
Local Planning Authority
Hillingdon
Constituency
Ruislip, Northwood and Pinner MP: David Simmonds (Con)
Country
England
Date first listed
3 October 1985
Type
Marker
OS grid reference
TQ 091 920
Coordinates
51.61686, -0.42449
Source
Historic England listing

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

Description

The London Coal Duty Marker is located on the county boundary, on a bank on the east side of the railway, approximately 350 metres south of the road. This marker, which dates from around 1887, was cast by Falkirk Iron Co. Ltd. It features a square stone base with a chamfered top that supports a cast-iron square with four open panels and a moulded cornice. Above this cornice rises a short obelisk, making the entire structure stand between one and a half to two metres high. The marker indicates the extent of coal duty, which originally had a 20-mile radius from the General Post Office, but was moved in 1861 to its current location on the boundary of the Metropolitan Police District.

Local climate

London Coal Duty Marker on county boundary on bank on east side of railway about 350 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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