Salisbury Plain is a chalk plateau in the south western part of central southern England covering 300 square miles (780 km2). It is part of a system of chalk downlands throughout eastern and southern England formed by the rocks of the Chalk Group and largely lies within the county of Wiltshire, but stretches into Hampshire.
Beacon Hill is near the village of Burghclere and Watership Down, in north Hampshire. The hill's name is derived from the fact that it was one of many Beacon Hills in England and beyond. This hill was once the site of the most famous beacon in Hampshire. It is 261 metres high and has one of England's most well known hill forts on its slopes, visible from the main A34 road which passes close by. From there, outstanding views of the surrounding area and much of Hampshire may be obtained. The site is open to the public and managed by Hampshire County Council. It is an 80.7-hectare (199-acre) biological Site of Special Scientific Interest called Burghclere Beacon and a Nature Conservation Review site, Grade I.
Whitehorse Hill is a hill in the Berkshire Downs in Oxfordshire, England, west of Wantage. At 261 metres (856 ft), it is the highest point in Oxfordshire. Uffington Castle lies on the summit of the hill, and the Uffington White Horse is on the hill's northern slope. The hill and an adjacent area below, including Dragon Hill and The Manger, make up a 98.9-hectare (244-acre) biological and geological Site of Special Scientific Interest.
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.
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.
Bratton Downs is a 395.8 hectare biological and geological Site of Special Scientific Interest in Wiltshire, England, near the villages of Bratton and Edington, and about 3 miles (5 km) east of the town of Westbury. It was notified in 1971. The designated area consists mainly of chalk grassland, as well as some ancient woodland, and supports a diverse range of native flora and fauna. It overlays notable geological features—principally landforms created by glaciation in the Pleistocene.
Long Knoll is a hill in the west of the English county of Wiltshire. It is a ridge of chalk grassland, some 1.5 kilometres (1 mi) in length, and forms the boundary between the civil parishes of Kilmington to the south and Maiden Bradley to the north. The ridge is 288 metres (945 ft) above sea level at its highest point and it is possible to view King Alfred's Tower, Cranmore Tower, the Black Mountains and Glastonbury Tor on clear days.
Ham Hill is a hill and area of chalk downland in Wiltshire, England, on the steep banks running alongside the road from the village of Ham to Buttermere, close to the Berkshire border. A biological Site of Special Scientific Interest, notified in 1971, covers 1.5 hectares of the site; this designation is due to the site's species-rich plant and insect communities, which include some rare species. Notable among these is the musk orchid, which has been confirmed at only one other site in Wiltshire.
Holies Down is a 5.6-hectare (14-acre) biological Site of Special Scientific Interest south of Streatley in Berkshire. It is in the North Wessex Downs, which is an Area of Outstanding Natural Beauty, and is part of the Holies section of the Lardon Chase, the Holies and Lough Down National Trust property.
Hollingbourne Downs is a 60.9-hectare (150-acre) biological Site of Special Scientific Interest east of Maidstone in Kent.
Quarry Hangers is a 28.5-hectare (70-acre) biological Site of Special Scientific Interest south-west of Caterham in Surrey. An area of 11 hectares is a nature reserve managed by the Surrey Wildlife Trust.
Willingdon Down is a 67.5-hectare (167-acre) biological Site of Special Scientific Interest west of Willingdon, a suburb of Eastbourne in East Sussex. Part of it is a Neolithic causewayed enclosure which is a Scheduled Monument
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.
Scratchbury Camp is the site of an Iron Age univallate hillfort on Scratchbury Hill, overlooking the Wylye valley about 1 km northeast of the village of Norton Bavant in Wiltshire, England. The fort covers an area of 37 acres (15 ha) and occupies the summit of the hill on the edge of Salisbury Plain, with its four-sided shape largely following the natural contours of the hill.
Letcombe Bassett is a village and civil parish about 2 miles (3 km) southwest of the market town of Wantage in the Vale of White Horse. It was part of Berkshire until the 1974 boundary changes transferred the Vale of White Horse to Oxfordshire. The 2011 Census recorded the parish population as 148. The village is a spring line settlement, being the source of Letcombe Brook at the foot of the Berkshire Downs escarpment. Hackpen, Warren & Gramp's Hill Downs Site of Special Scientific Interest is in the parish.
Leckhampton Hill and Charlton Kings Common is a 63.8-hectare (158-acre) biological and geological Site of Special Scientific Interest in Gloucestershire, notified in 1954. There are five units of assessment.
Croker's Hole is a 4.4-hectare (11-acre) biological Site of Special Scientific Interest north of Upper Lambourn in Berkshire.
Homefield Wood is a 6.1-hectare (15-acre) Site of Special Scientific Interest in Hambleden in Buckinghamshire. It is owned by the Forestry Commission, and managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is part of the Chilterns Area of Outstanding Natural Beauty.
Hackpen White Horse is a chalk hill figure of a white horse on Hackpen Hill, located below The Ridgeway on the edge of the Marlborough Downs, two miles south east of Broad Hinton, Wiltshire, England. It is one of nine white horse hill figures located in Wiltshire. It is also known as the Broad Hinton White Horse due to its near location to Broad Hinton. Supposedly cut by local parish clerk Henry Eatwell in 1838 to commemorate the coronation of Queen Victoria, the horse is 90 square feet (8.4 m2). The horse is regularly scoured and maintained.
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.
