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.
Ingrebourne Marshes are a 74.8 hectare biological Site of Special Scientific Interest in Hornchurch in the London Borough of Havering. Ingrebourne Valley Local Nature Reserve includes a small part of the SSSI west of the River Ingrebourne. The site is managed by the Essex Wildlife Trust
Lingfield Cernes is a 10.3-hectare (25-acre) biological Site of Special Scientific Interest east of Lingfield in Surrey.
Wormsley Chalk Banks are six separate areas which together are a 14.1-hectare (35-acre) biological Site of Special Scientific Interest near Turville in Buckinghamshire and Oxfordshire. The site is in the Chilterns Area of Outstanding Natural Beauty.
Holland Haven Marshes is a 208.8-hectare (516-acre) biological Site of Special Scientific Interest north-east of Clacton-on-Sea in Essex. It is an L shaped site which stretches along the coast from Frinton-on-Sea to Holland-on-Sea, and then north along the Holland Brook. It includes Holland Haven Country Park, a 22.1 hectare Local Nature Reserve owned and managed by Tendring District Council.
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.
Down Bank is a 5.9-hectare (15-acre) biological Site of Special Scientific Interest south-west of Canterbury in Kent.
Larkey Valley Wood is a 44.1-hectare (109-acre) biological Site of Special Scientific Interest south of Canterbury in Kent. It is also a Local Nature Reserve and it is owned and managed by Canterbury City Council.
Magpie Bottom is a 51.9-hectare (128-acre) biological Site of Special Scientific Interest north of Sevenoaks in Kent.
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.
Oldbury and Seal Chart is a 212.4-hectare (525-acre) biological Site of Special Scientific Interest east of Sevenoaks in Kent, England. It is in the Kent Downs Area of Outstanding Natural Beauty, and part of it is Oldbury Hill, a National Trust property and Iron Age hill fort.
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.
Stodmarsh SSSI is a 623.2-hectare (1,540-acre) biological Site of Special Scientific Interest near Stodmarsh, north-east of Canterbury in Kent. Parts of it are a Nature Conservation Review site, Grade I, a National Nature Reserve, a Ramsar internationally important wetland site, a Special Area of Conservation and a Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
