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The Harrow Weald Common, Grim's Dyke Open Space City Open Space 9358


Harrow Weald Common is a remnant of the once extensive woodland of the Forest of Middlesex. Grim's Dyke Open Space is named after the ancient earthwork that runs for 3 miles between Harrow Weald Common and Pinner Green, its original purpose unknown.

Visitor Access & Directions

Access Contact Details

Opening is unrestricted.


London Overground: Hatch End. London Overground/Rail/Tube (Bakerloo): Harrow & Wealdstone then bus. Bus: 258
  • Conservation Area
  • Reference: part: The City is in Brookshill Drive CA
  • Green Belt
  • Scheduled Ancient Monument
  • Reference: Grim's Dyke
  • Site of Nature Conservation Importance
  • Site of Special Scientific Interest
  • Reference: Stanmore and Harrow Weald Commons
  • Tree Preservation Order


  • London Parks and Gardens Trust