Knole Park is a 383.4-hectare (947-acre) biological Site of Special Scientific Interest in Sevenoaks in Kent. About 43 acres of the park belongs to the National Trust, as does Knole House, which sits within it. The remaining parkland is privately owned by the Knole Estate. It is in the Kent Downs Area of Outstanding Natural Beauty.
Ham Street Woods is a 175.2-hectare (433-acre) biological Site of Special Scientific Interest south of Ashford in Kent. It is a Nature Conservation Review site, Grade I, and an area of 97.1 hectares is a National Nature Reserve.
Lydden and Temple Ewell Downs is a 63.2-hectare (156-acre) biological Site of Special Scientific Interest north-west of Dover in Kent. It is a Special Area of Conservation and Nature Conservation Review site. It is also part of the 78.5-hectare (194-acre) Lydden Temple Ewell National Nature Reserve and the 90-hectare (220-acre) Lydden Temple Ewell nature reserve, which is managed by the Kent Wildlife Trust. It is in the North Downs Area of Outstanding Natural Beauty.
Charing Beech Hangers is a 52.6-hectare (130-acre) biological Site of Special Scientific Interest north of Ashford in Kent.
Chattenden Woods and Lodge Hill is a 351-hectare (870-acre) biological Site of Special Scientific Interest north of Rochester in Kent.
Darenth Wood is a 122.9-hectare (304-acre) biological Site of Special Scientific Interest east of Dartford in Kent.
Holborough to Burham Marshes is a 149.8-hectare (370-acre) biological Site of Special Scientific Interest Kent. Holborough Marshes and Burham Marsh are managed by the Kent Wildlife Trust.
Magpie Bottom is a 51.9-hectare (128-acre) biological Site of Special Scientific Interest north of Sevenoaks in Kent.
Medway Estuary and Marshes is a 4,748.8-hectare (11,735-acre) biological Site of Special Scientific Interest which stretches along the banks of the River Medway between Gillingham and Sheerness in Kent. It is a Nature Conservation Review site, Grade I, a Ramsar internationally important wetland site, and a Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
Northward Hill is a 52.5-hectare (130-acre) biological Site of Special Scientific Interest Kent. It is a Nature Conservation Review site, Grade 2, and is also designated High Halstow National Nature Reserve The site is managed by the Royal Society for the Protection of Birds.
One Tree Hill and Bitchet Common is a 79.2-hectare (196-acre) biological Site of Special Scientific Interest east of Sevenoaks in Kent. It is in Kent Downs Area of Outstanding Natural Beauty and One Tree Hill is managed by the National Trust
Orlestone Forest is a 347.6-hectare (859-acre) biological Site of Special Scientific Interest south of Ashford in Kent. It is a Nature Conservation Review site, Grade I.
Alex Farm Pastures is a 4.5-hectare (11-acre) biological Site of Special Scientific Interest south of Shadoxhurst in Kent.
Sandwich Bay to Hacklinge Marshes is a 1,790.1-hectare (4,423-acre) biological and geological Site of Special Scientific Interest which stretches between Deal and Sandwich in Kent. It includes two Geological Conservation Review sites, and most of it is a Nature Conservation Review site, Grade I. Part of it is a Ramsar site, a Special Area of Conservation, a Special Protection Area and a National Nature Reserve, It also includes a Kent Wildlife Trust nature reserve and a Local Nature Reserve,
Scotney Castle SSSI is a 112.5-hectare (278-acre) biological Site of Special Scientific Interest in the grounds of Scotney Castle, a National Trust property south-east of Tunbridge Wells in Kent.
South Thames Estuary and Marshes is a 5,289-hectare (13,070-acre) biological Site of Special Scientific Interest which stretches between Gravesend and the mouth of the River Medway in Kent. Part of it is a Nature Conservation Review site, Grade I, and part is a Royal Society for the Protection of Birds nature reserve. It is part of the Thames Estuary and Marshes Ramsar internationally important wetland site and Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
West Blean and Thornden Woods is a 781-hectare (1,930-acre) biological Site of Special Scientific Interest north of Canterbury in Kent. It is part of the Blean Woods Nature Conservation Review site, and an area of 490 hectares is a nature reserve managed by the Kent Wildlife Trust. The woods form one of the largest areas of ancient woodland in the UK, with parts of it over 1,000 years old.
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,
Cowden Pound Pastures is a 5.9-hectare (15-acre) biological Site of Special Scientific Interest north of Cowden in Kent. It is managed by the Kent Wildlife Trust.
