The western part of the woodland forms Harrow Weald Common and other smaller woods that surround the Grim's Dyke Hotel, the former country house of W. S. Gilbert.
The western part of the woodland forms Harrow Weald Common, which adjoins Harrow Weald SSSI, a geological Site of Special Scientific Interest. Other smaller woods surround the Grim's Dyke Hotel, the former country house of W. S. Gilbert.