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Offa's Dyke is a linear earthwork constructed during the later eighth century, attributed to King Offa of Mercia, to define and defend the Anglo-Saxon kingdom's western frontier against Welsh territory. The section north east of Sedbury sewage works in Gloucestershire survives as a substantial bank and ditch, representing part of this monumental frontier system that extended across the Welsh border. The dyke in this locality demonstrates the characteristic engineering of the monument, with an impressive earthwork profile that would have served both as a physical and symbolic demarcation of political boundary. This section remains a significant survival of one of the most ambitious engineering projects of Anglo-Saxon England, preserved as a scheduled ancient monument and testament to eighth-century territorial organisation.
Offa's Dyke: section immediately north east of Sedbury sewage works is a scheduled monument protected by Historic England under reference 1020640. View the official record →
Offa's Dyke is a linear earthwork constructed during the later eighth century, attributed to King Offa of Mercia, to define and defend the Anglo-Saxon kingdom's western frontier against Welsh territory. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1020640.
Offa's Dyke: section immediately north east of Sedbury sewage works 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 1020640.
Several scheduled monuments lie within 10 km, including Heston Brake Long Barrow (6 km), Crick Medieval House (6.1 km), Portskewett Hill Roman Site (6.5 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Offa's Dyke: section immediately north east of Sedbury sewage works'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.
Offa's Dyke: section immediately north east of Sedbury sewage works stands on Triassic Rocks (Undifferentiated), bedrock that formed in the Triassic. The rock here is mudstone, siltstone and sandstone.