The Essex Wildlife Trust (EWT) is one of 46 wildlife trusts which cover the United Kingdom. The EWT was founded in 1959, and it describes itself as Essex's leading conservation charity, which aims to protect wildlife for the future and the people of the county. As of January 2017, it has over 34,000 members and runs 87 nature reserves, 2 nature parks and 11 visitor centres.
Sevenoaks Gravel Pits is a 73.7-hectare (182-acre) biological Site of Special Scientific Interest on the northern outskirts of Sevenoaks in Kent. It is managed by Kent Wildlife Trust as the Sevenoaks Wildlife Reserve and Jeffery Harrison Visitor Centre.
Colne Estuary is a 2915 hectare biological and geological Site of Special Scientific Interest near Brightlingsea in Essex. It is also a Nature Conservation Review site, a National Nature Reserve, a Ramsar wetland site of international importance, a Special Protection Area, a Special Area of Conservation, and a Geological Conservation Review site. Three areas in the site are managed by the Essex Wildlife Trust, Colne Point, Fingringhoe Wick and Howlands Marsh.
Grays Thurrock Chalk Pit is a 17.3-hectare (43-acre) Site of Special Scientific Interest in Grays in Essex. It is part of Chafford Gorges Nature Park, which is managed by the Essex Wildlife Trust.
Great Wood and Dodd's Grove is a 36.8-hectare (91-acre) biological Site of Special Scientific Interest in Leigh-on-Sea in Essex. It is also a Local Nature Reserve called Belfairs. Essex Wildlife Trust runs the Belfairs Woodland Centre and manages the site together with Southend-on-Sea City Council.
Hamford Water is a 2,185.8-hectare (5,401-acre) biological Site of Special Scientific Interest between Walton-on-the-Naze and Harwich in Essex. The site is a tidal inlet which has marsh grasslands, creeks, mud and sand flats, salt marshes, islands and beaches. It is described by Natural England as "of international importance for breeding little terns and wintering dark-bellied brent geese, wildfowl and waders, and of national importance for many other bird species." Rare plants include hog's fennel and slender hare's-ear. The main invertebrates are worms and thin-shelled molluscs. The largest island, Horsey Island, can be reached on foot at low tide across The Wade from Kirby-le-Soken.
West Wood is a 23.6 hectares biological Site of Special Scientific Interest in Little Sampford, north of Thaxted in northwestern Essex. It is owned and managed by the Essex Wildlife Trust.
Little Haven is a 37.2-hectare (92-acre) nature reserve in Thundersley in Essex. It is owned by the Little Haven Children's Hospice, and leased to the Essex Wildlife Trust (EWT).
Tile Wood is a 6.5-hectare (16-acre) nature reserve in Thundersley in Essex. It is managed by the Essex Wildlife Trust.
Lion Pit is a 2.5-hectare (6.2-acre) geological Site of Special Scientific Interest in Grays in Essex. It is a Geological Conservation Review site, and part of the Chafford Gorges Nature Park, which is managed by the Essex Wildlife Trust.
Copperas Wood is a 13.8-hectare (34-acre) nature reserve between Ramsey and Wrabness in Essex. It is owned and managed by the Essex Wildlife Trust, and is part of the Stour and Copperas Woods, Ramsey Site of Special Scientific Interest.
Danish Camp is an Iron Age fortified settlement in Shoeburyness in Essex. It is a Scheduled Monument under the Ancient Monuments and Archaeological Areas Act 1979, list number 1017206. The site is in the Gunners Park and Shoebury Ranges nature reserve, which is managed by the Essex Wildlife Trust.
Abbotts Hall Farm is a 282 hectare nature reserve in Great Wigborough in Essex. It is the head office of the Essex Wildlife Trust, which manages the site. It is also part of the Blackwater Estuary National Nature Reserve, Site of Special Scientific Interest, Ramsar site, Special Protection Area and Special Area of Conservation, It is an important archaeological site, and includes a Scheduled Monument, Great Wigborough henge.
Chigborough Lakes is an 18.6-hectare (46-acre) nature reserve in Maldon in Essex. It is managed by the Essex Wildlife Trust.
Fingringhoe Wick is a 48.6-hectare (120-acre) nature reserve in Fingringhoe in Essex. It is managed by the Essex Wildlife Trust, which runs a visitor centre on the site. It is part of the Colne Estuary Site of Special Scientific Interest, Ramsar site and Nature Conservation Review site.
Little Waltham Meadows is an 8.9-hectare (22-acre) nature reserve south of Little Waltham in Essex. It is owned and managed by the Essex Wildlife Trust.
Phyllis Currie Nature Reserve is an 8.9-hectare (22-acre) nature reserve north-west of Great Leighs in Essex. It is owned and managed by the Essex Wildlife Trust.
Sandylay and Moat Woods is a 7.5-hectare (19-acre) nature reserve east of Great Leighs in Essex. It is owned and managed by the Essex Wildlife Trust.
Loddon Nature Reserve is a 14-hectare (35-acre) nature reserve on the edge of the village of Twyford in Berkshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
