Monument to William and Agnes Loudon, in Churchyard to Church of St John the Baptist on South Side is a Grade II listed building in the Harrow local planning authority area, England. First listed on 25 May 1983. Monument.

Monument to William and Agnes Loudon, in Churchyard to Church of St John the Baptist on South Side

WRENN ID
nether-jamb-ivory
Grade
II
Local Planning Authority
Harrow
Constituency
Ruislip, Northwood and Pinner MP: David Simmonds (Con)
Country
England
Date first listed
25 May 1983
Type
Monument
Address
Monument to William and Agnes Loudon, in Churchyard to Church of St John the Baptist on South Side, Church Lane
OS grid reference
TQ 123 896
Coordinates
51.59437, -0.3788
Source
Historic England listing

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

Description

The monument to William and Agnes Loudon is located in the churchyard of the Church of St John the Baptist in Pinner, on the south side. Erected in 1843, this obelisk features arches on each side of the base and two sarcophagus ends that project at a higher level. It was created by J C Loudon, a notable landscape gardener, writer, and gardener, in memory of his parents.

Local climate

Monument to William and Agnes Loudon, in Churchyard to Church of St John the Baptist on South Side 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.

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