Pulborough Brooks is a 160-hectare (400-acre) biological Site of Special Scientific Interest south of Pulborough in West Sussex. It is part of the Pulborough Brooks nature reserve, which is managed by the Royal Society for the Protection of Birds. It is also part of the Arun Valley Ramsar site, Special Area of Conservation and Special Protection Area.
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.
Brighton to Newhaven Cliffs is a 165.4-hectare (409-acre) biological and geological Site of Special Scientific Interest and Geological Conservation Review site, which stretches along the coast between Brighton and Newhaven in East Sussex. An area of 16.4 hectares is the Castle Hill, Newhaven Local Nature Reserve
Amberley Wild Brooks or Amberley Wildbrooks is a 327.5-hectare (809-acre) biological Site of Special Scientific Interest west of Storrington in West Sussex. An area of 80 hectares is a nature reserve managed by the Sussex Wildlife Trust It is a Site of Special Scientific Interest and a Nature Conservation Review site. It is also part of the Arun Valley Ramsar site, Special Area of Conservation and Special Protection Area.
Stone Farm Rocks or Stone Hill Rocks is a 0.6-hectare (1.5-acre) geological Site of Special Scientific Interest south of East Grinstead in West Sussex. It is a Geological Conservation Review site.
Sudbourne Park Pit is a 1.1-hectare (2.7-acre) geological Site of Special Scientific Interest between Orford and Chillesford in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Ringstead Downs is a 6.9-hectare (17-acre) biological Site of Special Scientific Interest east of Hunstanton in Norfolk. It is in the Norfolk Coast Area of Outstanding Natural Beauty, and it is the western part of the 11-hectare (27-acre) Ringstead Downs nature reserve, which is managed by the Norfolk Wildlife Trust.
Arun Banks is a 25.8-hectare (64-acre) biological Site of Special Scientific Interest north of Arundel in West Sussex.
Climping Beach is a 32.1-hectare (79-acre) biological Site of Special Scientific Interest west of Littlehampton in West Sussex. The eastern half is designated a Local Nature Reserve called West Beach.
Coates Castle SSSI is a 7.7-hectare (19-acre) biological Site of Special Scientific Interest west of Pulborough in West Sussex.
Pads Wood is a 22.2-hectare (55-acre) biological Site of Special Scientific Interest west of Midhurst in West Sussex.
Worth Forest is a 43.8-hectare (108-acre) biological Site of Special Scientific Interest south of Crawley in West Sussex. It is in the High Weald Area of Outstanding Natural Beauty.
Rook Clift is a 10.7-hectare (26-acre) biological Site of Special Scientific Interest east of South Harting in West Sussex. It is also a Special Area of Conservation.
West Harting Down SSSI is a 13.9-hectare (34-acre) biological Site of Special Scientific Interest west of South Harting in West Sussex. It is part of the 317.9-hectare (786-acre) West Harting Down, which is managed by Forestry England.
East Dean Park Wood is a 17.8-hectare (44-acre) biological Site of Special Scientific Interest south of East Dean in West Sussex.
Treyford to Bepton Down is a 121.5-hectare (300-acre) biological Site of Special Scientific Interest south-west of Midhurst in West Sussex.
Waltham Brooks is a 47.4-hectare (117-acre) biological Site of Special Scientific Interest south-west of Pulborough in West Sussex. It is owned and managed by the Sussex Wildlife Trust and is part of the Arun Valley Ramsar site and Special Protection Area.
Upper Greensand Hangers: Wyck to Wheatley is a 13.2-hectare (33-acre) biological Site of Special Scientific Interest east of Alton in Hampshire. It is part of the East Hampshire Hangers Special Area of Conservation.
Upper Hamble Estuary and Woods is a 151.2-hectare (374-acre) biological Site of Special Scientific Interest east of Southampton in Hampshire. It is part of Solent and Southampton Water Ramsar site and Special Protection Area, and of Solent Maritime Special Area of Conservation. Part of the site is in Manor Farm Country Park, which is a Local Nature Reserve.
