The Sussex Wildlife Trust (SWT) is a conservation charity which aims to protect natural life in Sussex. It was founded in 1961 and is one of 46 wildlife trusts across the UK and the Isle of Man and Alderney. As of 2019, it has 33,000 members and manages 2,000 hectares of land for nature. It is a registered charity and in the year to 31 March 2019 it had an income of £5.7 million and expenditure of £4 million, resulting in net income of £1.7 million.
Eridge Green is a 8.4-hectare (21-acre) biological Site of Special Scientific Interest north-east of Crowborough in East Sussex. It is part of the 44 hectares Eridge Rocks nature reserve, which is managed by Sussex Wildlife Trust.
Combe Haven is a 153-hectare (380-acre) biological Site of Special Scientific Interest between Hastings and Bexhill-on-Sea in East Sussex. An area of 18.5 acres is Filsham Reedbed Local Nature Reserve, which is managed by the Sussex Wildlife Trust
Marline Valley Woods is a 55.1-hectare (136-acre) biological Site of Special Scientific Interest on the western outskirts of Hastings in East Sussex. An area of 40.3 hectares is a Local Nature Reserve owned by Hastings Borough Council and managed by the Sussex Wildlife Trust.
Ebernoe Common is a 233.9-hectare (578-acre) biological Site of Special Scientific Interest in Ebernoe, north of Petworth in West Sussex. It is a Nature Conservation Review site, Grade I, a national nature reserve and a Special Area of Conservation. It is managed by the Sussex Wildlife Trust
Grove House Wood is a 2.2 hectare Local Nature Reserve in Stanford-le-Hope in Essex. According to Natural England, it is owned by Thurrock Council and managed by Essex Wildlife Trust but it is not listed on the web site of either body.
Wouldham to Detling Escarpment is a 311.2-hectare (769-acre) biological and geological Site of Special Scientific Interest which stretches from Wouldham to Detling, north of Maidstone in Kent. Part of it is a Geological Conservation Review site, and it is part of the North Downs Woodlands Special Area of Conservation and the Kent Downs Area of Outstanding Natural Beauty. It is a Nature Conservation Review site, Grade I and it includes three Kent Wildlife Trust nature reserves and a Local Nature Reserve,
Filsham Reedbed is an 18.5-hectare (46-acre) Local Nature Reserve on the western outskirts of St Leonards-on-Sea in East Sussex. It is owned by Hastings Borough Council and managed by Sussex Wildlife Trust. It is part of Combe Haven Site of Special Scientific Interest.
Railway Land, Lewes is a 10.9-hectare (27-acre) Local Nature Reserve in Lewes in East Sussex. It is owned by Lewes District Council and managed by the council and the Railway Land Wildlife Trust.
Rye Harbour LNR is a 325.4-hectare (804-acre) local nature reserve in Rye in East Sussex. The site is part of the 465-hectare (1,150-acre) nature reserve managed by the Sussex Wildlife Trust. It is also part of Dungeness, Romney Marsh and Rye Bay Ramsar site, Special Protection Area and Site of Special Scientific Interest and Dungeness Special Area of Conservation.
Withdean and Westdene Woods is a 7.9-hectare (20-acre) Local Nature Reserve in four separate areas in Brighton in East Sussex. Most of the site is owned and managed by Brighton and Hove City Council. Withdean Woods is a 1-hectare (2.5-acre) nature reserve managed by the Sussex Wildlife Trust.
Burton Park SSSI is a 57.7-hectare (143-acre) biological Site of Special Scientific Interest west of Pulborough in West Sussex. A larger area of 63 hectares, including Chingford Pond to the west, is designated a Local Nature Reserve called Burton and Chingford Ponds, which is managed by the Sussex Wildlife Trust and West Sussex County Council. The site is adjacent to Burton Park, a Grade I listed building.
The Mens is a 205.2-hectare (507-acre) biological Site of Special Scientific Interest west of Billingshurst in West Sussex. It is a Nature Conservation Review site, Grade I and a Special Area of Conservation. An area of 166 hectares south of the A272 road is managed as a nature reserve by the Sussex Wildlife Trust.
Flatropers Wood is a 38-hectare (94-acre) nature reserve in Rye in East Sussex. It is managed by the Sussex Wildlife Trust.
Gillham Wood is a 3-hectare (7.4-acre) nature reserve west of Bexhill-on-Sea in East Sussex. It is managed by the Sussex Wildlife Trust.
Malling Down is an 85-hectare (210-acre) nature reserve on the eastern outskirts of Lewes in East Sussex. It is managed by the Sussex Wildlife Trust. It is part of Lewes Downs, which is a Nature Conservation Review site, Grade I. Special Area of Conservation and Site of Special Scientific Interest.
Southerham Farm is a 131-hectare (320-acre) nature reserve on the eastern outskirts of Lewes in East Sussex. It is managed by the Sussex Wildlife Trust.
Woods Mill is a 19-hectare (47-acre) nature reserve south of Henfield in West Sussex. It is managed by the Sussex Wildlife Trust.
