Hadleigh Castle

Hadleigh Castle stands on a soft hill of London clay above the Thames Estuary in Essex. Built after 1215 by Hubert de Burgh for Henry III, it once commanded wide views over marshland and water. The first castle had octagonal walls with square and semi-circular towers, built of Kentish ragstone bound with cockleshell mortar. Edward III enlarged it in the 14th century, adding royal lodgings, a High Tower and a portcullis-protected entrance. The remains are now protected as a Grade I listed building and scheduled monument. The castle’s story includes royal residents from Edward I to Henry VIII. Queen Margaret complained about its condition in 1299, and Edward III spent over £2,200 rebuilding it in the 1360s. A garrison of 24 soldiers once guarded the site, and a tidal watermill supplied flour for the household. By the 16th century the stone was sold off, leaving the ruins we see today. Visitors find grassy slopes and crumbling walls rising above the estuary. The surviving towers and curtain walls mark where Edward III’s grander palace once stood. The view stretches across the water to Queenborough Castle on the opposite shore. The site is quiet, with only the wind and distant tide for company.