Windsor Hill is a 61.8-hectare (153-acre) biological Site of Special Scientific Interest in Princes Risborough in Buckinghamshire. It lies within the Chilterns Area of Outstanding Natural Beauty, and it is featured in the Nature Conservation Review. A small part is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust, and access to this area requires a permit.
Cobham Woods is a 242.7 hectares biological Site of Special Scientific Interest on the western outskirts of Rochester in Kent. It is in the Kent Downs Area of Outstanding Natural Beauty and part of it is managed by the National Trust.
Park Gate Down or Parkgate Down is a 7-hectare (17-acre) biological Site of Special Scientific Interest south-east of Stelling Minnis in Kent. It is also a Special Area of Conservation and is managed by the Kent Wildlife Trust,
Westfield Wood is a 5-hectare (12-acre) nature reserve north of Maidstone in Kent, which is managed by the Kent Wildlife Trust. It is part of the Wouldham to Detling Escarpment Site of Special Scientific Interest and Nature Conservation Review site, Grade I. It is also in the North Downs Woodlands Special Area of Conservation and the Kent Downs Area of Outstanding Natural Beauty.
Burham Down is a 110-hectare (270-acre) nature reserve between Maidstone and Chatham in Kent. It is managed by the Kent Wildlife Trust. It is part of the Wouldham to Detling Escarpment Site of Special Scientific Interest and Nature Conservation Review site, Grade I, the Kent Downs Area of Outstanding Natural Beauty, and the North Downs Woodlands Special Area of Conservation.
Ashridge Commons and Woods is a 640.1 hectare biological Site of Special Scientific Interest in Buckinghamshire and Hertfordshire. It is located in Little Gaddesden, and is part of the National Trust Ashridge Estate in the Chilterns Area of Outstanding Natural Beauty.
Riddlesdown Common or Riddlesdown is a 43 hectare area of green space in Kenley, towards the northern end of the North Downs in the London Borough of Croydon. It is owned and maintained by the City of London Corporation, apart from two small areas, one of which is operated by the London Wildlife Trust and the other by Croydon Council. An area of 32 hectares is a biological Site of Special Scientific Interest. The name Riddlesdown also applies to the local district of residential housing. A trig point at the site indicates that it is 525 ft (160 m) above sea level.
Grangelands and Pulpit Hill is a 25.5-hectare (63-acre) biological Site of Special Scientific Interest in Cadsden in Buckinghamshire. It lies within the Chilterns Area of Outstanding Natural Beauty, and the planning authorities are Wycombe District Council and Buckinghamshire County Council.
Ivinghoe Hills is a 210.4 hectares Site of Special Scientific Interest in Ivinghoe in Buckinghamshire, and part of the Chilterns Area of Outstanding Natural Beauty. It is listed in A Nature Conservation Review. The Ridgeway long-distance footpath ends and the Icknield Way Path starts in the site on Ivinghoe Beacon. An Iron Age fort on Ivinghoe Beacon and a tumulus on Gallows Hill are Scheduled Monuments. The site is part of the National Trust's Ashridge Estate, apart from a small area which belongs to Buckinghamshire County Council.
Lodge Hill is a 31.8-hectare (79-acre) Site of Special Scientific Interest north of Bledlow Ridge in Buckinghamshire. The local planning authorities are Wycombe District Council and Buckinghamshire County Council. The site is in the Chilterns Area of Outstanding Natural Beauty, and The Ridgeway long-distance footpath crosses it.
Danbury Ridge Nature Reserves are a group of nature reserves totalling 101 hectares near Danbury in Essex, England. They are managed by the Essex Wildlife Trust, and most of them are in Sites of Special Scientific Interest (SSSIs). Two areas, the Backwarden and Hitchcock's Meadow, are part of Danbury Common SSSI, and Woodham Walter Common, Birch Wood, Pheasanthouse Wood, Poors Piece, Scrubs Wood, and a small area in Pheasanthouse Farm, are part of Woodham Walter Common SSSI.
Glapthorn Cow Pasture is a 28.2-hectare (70-acre) biological Site of Special Scientific Interest north-west of Oundle in Northamptonshire. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
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.
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
Purple Hill is a 14.9-hectare (37-acre) biological Site of Special Scientific Interest south of Gillingham in Kent. It is a Nature Conservation Review site, Grade 2.
Tower Hill to Cockham Wood is a 47.8-hectare (118-acre) biological and geological Site of Special Scientific Interest on the northern outskirts of Rochester in Kent. It contains two Geological Conservation Review sites.
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,
Chinnor Hill is a 26.8-hectare (66-acre) biological Site of Special Scientific Interest east of Chinnor in Oxfordshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Watlington and Pyrton Hills is a 112.7-hectare (278-acre) biological Site of Special Scientific Interest east of Watlington in Oxfordshire. An area of 1.6 hectares is Watlington Chalk Pit, which is a Local Nature Reserve.
