Rainham Marshes is an RSPB nature reserve in the east of London, adjacent to the Thames Estuary in Purfleet, Thurrock and the London Borough of Havering. In 2000, the area of land was bought from the Ministry of Defence, who used it as a test firing range. With no activity for several years, the nature reserve was officially opened to the public in 2006. It has maintained much of its medieval landscape, and is the largest area of wetland on the upper parts of the Thames Estuary.
Norsey Wood is a 67.2-hectare (166-acre) biological Site of Special Scientific Interest in Billericay, Essex. It is also a Local Nature Reserve and a Scheduled Monument.
Ingrebourne Marshes are a 74.8 hectare biological Site of Special Scientific Interest in Hornchurch in the London Borough of Havering. Ingrebourne Valley Local Nature Reserve includes a small part of the SSSI west of the River Ingrebourne. The site is managed by the Essex Wildlife Trust
Cherry Hinton Pit is a 12.8-hectare (32-acre) biological Site of Special Scientific Interest (SSSI) on the south-eastern outskirts of Cambridge. The site consists of East Pit and most of the smaller West Pit. East Pit is part of the Limekiln Close and East Pit Local Nature Reserve, which is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire under the name Cherry Hinton Chalk Pits. West Pit is a separate Local Nature Reserve (LNR).
Frays Farm Meadows is a 28.2-hectare (70-acre) biological Site of Special Scientific Interest near Denham in the London Borough of Hillingdon. It was notified as an SSSI in 1981, and has been managed by the London Wildlife Trust on behalf of Hillingdon Council since 1999. It is part of the Colne Valley Regional Park.
Croxley Common Moor is a 39.5-hectare (98-acre) biological Site of Special Scientific Interest (SSSI) and Local Nature Reserve in Croxley Green, Hertfordshire. It is owned by Three Rivers District Council and managed by the council together with the Countryside Management Service and the Friends of Croxley Common Moor. Most of it is a registered common.
Danbury Ridge Nature Reserves are a group of nature reserves totalling 101 hectares near Danbury in Essex, England. They are managed by the Essex Wildlife Trust, and most of them are in Sites of Special Scientific Interest (SSSIs). Two areas, the Backwarden and Hitchcock's Meadow, are part of Danbury Common SSSI, and Woodham Walter Common, Birch Wood, Pheasanthouse Wood, Poors Piece, Scrubs Wood, and a small area in Pheasanthouse Farm, are part of Woodham Walter Common SSSI.
West Pit is a 4.3 hectare Local Nature Reserve in Cherry Hinton, on the south-eastern outskirts of Cambridge. It is part of the Cherry Hinton Pit biological Site of Special Scientific Interest (SSSI), which includes the neighbouring East Pit.
Butter Wood is a 133-hectare (330-acre) biological Site of Special Scientific Interest (SSSI) east of Basingstoke in Hampshire. Part of Up Nately LNR, which is designated a Local Nature Reserve, is in the SSSI.
