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.
Chimney Meadows is a 49.6-hectare (123-acre) biological Site of Special Scientific Interest between Abingdon-on-Thames and Faringdon in Oxfordshire. It is also a national nature reserve, and part of the 308-hectare (760-acre) Chimney Meadows nature reserve, which is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Roding Valley Meadows is an 18.9-hectare (47-acre) biological Site of Special Scientific Interest in Buckhurst Hill in Essex. It is part of a 65.2 hectare Local Nature Reserve with the same name, which is owned by Epping Forest District Council and Grange Farm Trust, and managed by the Essex Wildlife Trust.
Hunsdon Mead is a 34 hectare biological Site of Special Scientific Interest (SSSI) west of Harlow and east of Roydon in Essex. The site is partly in Essex and partly in Hertfordshire, and it is jointly owned and managed by the Essex Wildlife Trust and the Herts and Middlesex Wildlife Trust. The SSSI also includes part of the neighbouring Roydon Mead. The planning authorities are East Hertfordshire District Council and Epping Forest District Council. Hunsdon Mead is registered common land.
The Crouch and Roach Estuaries are a 1729 hectare biological Site of Special Scientific Interest (SSSI) at the mouth of the Crouch and Roach rivers in Essex. The Crouch part of the SSSI stretches from near Battlesbridge to Foulness Island, and the Roach from Rochford to the junction with the Crouch. Part of the site is in the Mid-Essex Coast Special Protection Area under the EC Directive on the Conservation of Wild Birds, and a Ramsar wetland site of international importance. It is also part of the Essex Estuaries Special Area of Conservation. An area of 65 hectares is managed by the Essex Wildlife Trust as the Lion Creek and Lower Raypits nature reserve and 8 hectares at Woodham Fen, both of which are managed by the Essex Wildlife Trust. A small area is also a geological SSSI, The Cliff, Burnham-on-Crouch.
Frieth Meadows is a 2.5-hectare (6.2-acre) Site of Special Scientific Interest in Frieth in Buckinghamshire. It is in the Chilterns Area of Outstanding Natural Beauty.
Ashdon Meadows is a 1.5-hectare (3.7-acre) biological Site of Special Scientific Interest south of Ashdon in Essex.
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.
Mill Meadows, Billericay is a 6.7-hectare (17-acre) biological Site of Special Scientific Interest (SSSI) in Billericay in Essex, England. It is part of the 36.8 hectare Mill Meadows Local Nature Reserve (LNR), which is owned and managed by Basildon District Council.
Garrold's Meadow is a 5 hectare biological Site of Special Scientific Interest north of Leigh-on-Sea in Essex. The local planning authority is Castle Point Borough Council.
Sandbeach Meadows are a 30.3-hectare (75-acre) biological Site of Special Scientific Interest on the Dengie Peninsula, south-east of Bradwell-on-Sea in Essex. The local planning authority is Maldon District Council.
Tiptree Heath is a 25 hectare biological Site of Special Scientific Interest south-west of Tiptree in Essex, England. It is managed by the Essex Wildlife Trust together with the Friends of Tiptree Heath.
Vange and Fobbing Marshes are a 164.6-hectare (407-acre) biological Site of Special Scientific Interest in two areas south of Basildon in Essex, England. Vange Marsh is managed by the Royal Society for the Protection of Birds.
Gunners Park and Shoebury Ranges is a 25 hectare nature reserve in Shoeburyness in Essex. It is managed by the Essex Wildlife Trust (EWT). Part of Gunners Park is Shoeburyness Old Ranges Local Nature Reserve, which is itself part of the Foulness Site of Special Scientific Interest. At the eastern end of Gunners Park is the Danish Camp, a Scheduled Monument.
Langdon Nature Reserve is a 210 hectare nature reserve west of Basildon in Essex. It is managed by the Essex Wildlife Trust, and forms part of the Langdon Ridge Site of Special Scientific Interest.
Lion Creek and Lower Raypits is a 65.2-hectare (161-acre) nature reserve east of Canewdon in Essex. It is part of the Crouch and Roach Estuaries Site of Special Scientific Interest, and is owned and managed by the Essex Wildlife Trust.
Woodham Fen is an 8.1-hectare (20-acre) nature reserve in South Woodham Ferrers in Essex. It is managed by the Essex Wildlife Trust. It is part of the Crouch and Roach Estuaries Site of Special Scientific Interest.
Cowden Meadow is a 1.1-hectare (2.7-acre) biological Site of Special Scientific Interest east of Cowden in Kent.
