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Grim's Ditch is a linear earthwork monument located in Middlesex, England, forming part of a longer defensive or boundary system that extends across the Home Counties. This particular section at Blythwood House represents a stretch of the ditch that is believed to date to the Iron Age, though debate continues among scholars regarding its precise chronology and function. The earthwork survives as a substantial bank and ditch feature, characteristic of Iron Age fortification systems, and its preservation at this location provides important evidence for understanding prehistoric territorial organisation in the region. The site remains of archaeological significance for the study of Iron Age settlement patterns and defensive strategies in south-eastern England.
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 is a linear earthwork monument located in Middlesex, England, forming part of a longer defensive or boundary system that extends across the Home Counties. 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).
Aubrey generates in-depth historical research for any address in Britain — drawing on scheduled monument data, Domesday records, Roman heritage, PAS finds and medieval history to reveal the complete story of a landscape.
Research the area around Grim's Ditch: section N of Blythwood House