Beacon Hill, Warnford is a 46.4-hectare (115-acre) biological Site of Special Scientific Interest west of Warnford in Hampshire. It is a Nature Conservation Review site, and an area of 40.1 hectares is a national nature reserve. There is a round barrow cemetery dating to the Late Neolithic or Bronze Age on the hill, and this is a scheduled monument.
Old Winchester Hill is a 66.2-hectare (164-acre) biological Site of Special Scientific Interest in Hampshire. It is a Nature Conservation Review site, Grade I, and a national nature reserve. Part of it is a scheduled monument.
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.
Chiddingfold Forest is a 542.5-hectare (1,341-acre) biological Site of Special Scientific Interest in Chiddingfold in Surrey and West Sussex. One part of it, Fir Tree Copse, is a nature reserve which is managed by the Surrey Wildlife Trust
Chipstead Downs is a 157.8-hectare (390-acre) biological Site of Special Scientific Interest south-east of Banstead in Surrey, England. Part of it is Park Downs, which is managed by the Banstead Commons Conservators.
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.
Wye and Crundale Downs is a 358.3-hectare (885-acre) biological and geological Site of Special Scientific Interest in a number of separate areas east of Ashford in Kent. It is a Special Area of Conservation and a Nature Conservation Review site, Grade I. and it is part of Kent Downs Area of Outstanding Natural Beauty. Some areas are part of a National Nature Reserve, and another area is listed on the Geological Conservation Review.
Hackhurst and White Downs is a 185.1-hectare (457-acre) biological Site of Special Scientific Interest west of Dorking in Surrey. White Downs is a Nature Conservation Review site, Grade 2, and part of it is in the 200-hectare (490-acre) White Downs nature reserve, which is owned by the Wotton Estate and managed by the Surrey Wildlife Trust (SWT). Hackhurst Downs is a 29.9-hectare (74-acre) Local Nature Reserve, which part of the 40-hectare (99-acre) Hackhurst Downs nature reserve, which is owned by Surrey County Council and also managed by the SWT.
Pegsdon Hills and Hoo Bit is a 79-hectare (200-acre) nature reserve in Pegsdon in Bedfordshire. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. The site is on the border between Bedfordshire and Hertfordshire, and it covers Pegsdon Hills and part of the adjacent Deacon Hill in Bedfordshire, and Hoo Bit in Hertfordshire. It is in the Chilterns Area of Outstanding Natural Beauty, and part of the site is designated by Natural England as the Deacon Hill SSSI.
Deacon Hill SSSI is a 35.4-hectare (87-acre) biological Site of Special Scientific Interest in Pegsdon in Bedfordshire. It is in the Chilterns Area of Outstanding Natural Beauty, and it is part of the Pegsdon Hills and Hoo Bit nature reserve, managed by Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Hackpen, Warren & Gramp's Hill Downs is a 71.4-hectare (176-acre) biological Site of Special Scientific Interest in Letcombe Bassett in Oxfordshire.
Moulsford Downs is a 13.6-hectare (34-acre) biological Site of Special Scientific Interest north-west of Goring-on-Thames in Oxfordshire.
Turville Hill is a 22.4-hectare (55-acre) biological Site of Special Scientific Interest in Turville in Buckinghamshire. It is in the Chilterns Area of Outstanding Natural Beauty. Cobstone Windmill, also known as Turville Windmill, is located at the top.
Amberley Mount to Sullington Hill is a 177.2-hectare (438-acre) biological Site of Special Scientific Interest south-west of Storrington in West Sussex.
Waterperry Wood is a 137-hectare (340-acre) biological Site of Special Scientific Interest (SSSI) east of Oxford in Oxfordshire. It is a Nature Conservation Review site, Grade I, and is owned and managed by the Forestry Commission.
Whitecross Green and Oriel Woods is a 63-hectare (160-acre) biological Site of Special Scientific Interest between Oxford and Bicester in Oxfordshire. It is owned and managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust under the name Whitecross Green Wood.
Ashford Hill Woods and Meadows is a 141.5-hectare (350-acre) biological Site of Special Scientific Interest near Ashford Hill in Hampshire. An area of 23.45 hectares is Ashford Hill NNR, which is a National Nature Reserve.
Broughton Down is a 45.8-hectare (113-acre) biological Site of Special Scientific Interest west of Broughton in Hampshire. The eastern half is a nature reserve managed by the Hampshire and Isle of Wight Wildlife Trust.
Martin and Tidpit Downs is a 367.5-hectare (908-acre) biological Site of Special Scientific Interest north-west of Fordingbridge in Hampshire. Martin Down is a 341-hectare (840-acre) national nature reserve and an area of 115 hectares is a Nature Conservation Review site, Grade I. Bokerley Dyke, a prehistoric linear earthwork and scheduled monument, runs through the site.
Stockbridge Down is a 69.8-hectare (172-acre) biological Site of Special Scientific Interest east of Stockbridge in Hampshire. It is a Nature Conservation Review site, Grade 2. It is owned by the National Trust and part of it is a Scheduled Monument, with an Iron Age hillfort and fourteen Bronze Age burial mounds.
