List of local nature reserves in Greater London

[4] The local authority must have a legal interest in the site, by owning or leasing it or having a nature reserve agreement with the owner.

[6][a] The largest site, at 97.31 hectares (240.5 acres), is Brent Reservoir, most of which is a Site of Special Scientific Interest for its breeding wetland birds, especially great crested grebes, and for its marsh plant life.

[8] The longest is Parkland Walk, a linear site of 7.2 kilometres (4.5 miles) along the route of an old railway line.

[10] The newest LNRs are Coldfall Wood, Alexandra Palace and Park and Masons Field, all declared in 2013.

[11][12][13] Several sites, including Camley Street Natural Park in Kings Cross and Frays Valley, are managed by the London Wildlife Trust.