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Grim's Ditch: section N of Blythwood House is an ancient linear earthwork located in Middlesex, England. This section of the larger Grim's Ditch system represents part of a substantial defensive or boundary ditch that survives as a visible archaeological feature in the landscape. The monument dates to the Iron Age and represents part of a wider network of ditches that characterised territorial or settlement boundaries during this period. The earthwork's preservation at this location, despite later land use and development, makes it a significant record of prehistoric land division and organisation in the region.
Grim's Ditch: section N of Blythwood House is a scheduled monument protected by Historic England under reference 1002007. View the official record →
Grim's Ditch: section N of Blythwood House is an ancient linear earthwork located in Middlesex, England. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1002007.
Grim's Ditch: section N of Blythwood House is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1002007.
Several scheduled monuments lie within 10 km, including Pinner Hill ice house, 70m north east of Pinner Hill Golf Clubhouse (1.2 km), Pinner deer park, Pinner Park Farm (1.7 km), Park Pale, Ruislip (2.7 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Grim's Ditch: section N of Blythwood House's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Grim's Ditch: section N of Blythwood House stands on Lambeth Group, bedrock that formed in the Paleocene. The rock here is clay, silt, sand and gravel.