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.
Calstone and Cherhill Downs is a 128.6 hectare biological Site of Special Scientific Interest in Wiltshire, notified in 1971, including downland at Calstone Wellington and Cherhill. It provides one of the best examples in Wiltshire of unimproved downland.
Pewsey Downs is a 305.3 hectare biological Site of Special Scientific Interest on the southern edge of the Marlborough Downs north of Pewsey in Wiltshire, notified in 1951. It includes the Pewsey Downs National Nature Reserve.
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,
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.
Dumsey Meadow is a 9.6-hectare (24-acre) biological Site of Special Scientific Interest between Chertsey and Shepperton in Surrey.
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.
Staffhurst Wood is a 51-hectare (130-acre) biological Site of Special Scientific Interest south of Oxted in Surrey. It is a Nature Conservation Review site, Grade 2. An area of 38.1 hectares is a Local Nature Reserve, which is owned by Surrey County Council.
Thorpe Hay Meadow is a 6.4-hectare (16-acre) biological Site of Special Scientific Interest west of Staines-upon-Thames in Surrey. It is owned and managed by the Surrey Wildlife Trust.
Cheesefoot Head is a large natural amphitheatre and beauty spot just outside Winchester, England. It is situated on the A272 road. There are three bowl barrows on the site. The east, south and west walls of the amphitheatre are a 13.4-hectare (33-acre) biological Site of Special Scientific Interest (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.
Croxley Common Moor is a 39.5-hectare (98-acre) biological Site of Special Scientific Interest (SSSI) and Local Nature Reserve in Croxley Green, Hertfordshire. It is owned by Three Rivers District Council and managed by the council together with the Countryside Management Service and the Friends of Croxley Common Moor. Most of it is a registered common.
Fayland Chalk Bank is a 0.6-hectare (1.5-acre) Site of Special Scientific Interest in Parmoor, south of Lane End in Buckinghamshire. It is in the Chilterns Area of Outstanding Natural Beauty.
Kendall's Meadow is a 2.7-hectare (6.7-acre) biological Site of Special Scientific Interest north of Stoke Golding in Leicestershire.
Fames Rough is a 23-hectare (57-acre) nature reserve south-west of Chipstead in Surrey. It is managed by the Surrey Wildlife Trust and is part of the Chipstead Downs Site of Special Scientific Interest.
West Harting Down SSSI is a 13.9-hectare (34-acre) biological Site of Special Scientific Interest west of South Harting in West Sussex. It is part of the 317.9-hectare (786-acre) West Harting Down, which is managed by Forestry England.
Shirburn Hill is a 63.7-hectare (157-acre) biological Site of Special Scientific Interest just outside and to the northeast of Watlington, Oxfordshire.
