Totternhoe Stone is a relatively hard chalk outcropping in the middle of the Lower Chalk in the Chiltern Hills in Hertfordshire, Buckinghamshire, Bedfordshire and Cambridgeshire, England. Geologically, it is located in the upper part of the Cenomanian stage of the Cretaceous.
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.
Seale Chalk Pit is a 1.2-hectare (3.0-acre) geological Site of Special Scientific Interest west of Guildford in Surrey. It is a Geological Conservation Review site and part of the Seale Chalk Pit and Meadow 3-hectare (7.4-acre) private nature reserve, which is managed by the Surrey Wildlife Trust.
Totternhoe Knolls is a 13.1-hectare (32-acre) Site of Special Scientific Interest (SSSI) in Totternhoe in Bedfordshire. It is also a local nature reserve, and part of the Chilterns Area of Outstanding Natural Beauty. The site is owned by Central Bedfordshire Council and leased to the National Trust. Most of the site is maintained jointly by the National Trust and the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire (WTBCN), and is part of the WTBCN Totternhoe nature reserve, which also includes Totternhoe Chalk Quarry and Totternhoe Stone Pit. The SSSI also includes Totternhoe Castle, the earthworks of a Norman motte-and-bailey castle which is a Scheduled monument.
Totternhoe Chalk Quarry is a 13.4-hectare (33-acre) biological Site of Special Scientific Interest in Totternhoe in Bedfordshire. Part of it lies in Totternhoe nature reserve, which is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. The site is part of the Chilterns Area of Outstanding Natural Beauty.
Water End Swallow Holes is a biological site of Special Scientific Interest in Hertfordshire, south-east England. Located in Welham Green and under the planning authority of Welwyn Hatfield District Council, it has an area of 11.3 hectares.
Westwood Quarry is a 0.07 hectares geological site of Special Scientific Interest west of Watford in Hertfordshire. It was notified in 1987 under the Wildlife and Countryside Act 1981. The planning authority is Three Rivers District Council. It is a Geological Conservation Review site.
Southerham Works Pit is a 1-hectare (2.5-acre) geological Site of Special Scientific Interest in Lewes in East Sussex. It is a Geological Conservation Review site.
Harefield Pit is a 1.8-hectare geological Site of Special Scientific Interest in Harefield in the London Borough of Hillingdon. It occupies much of a partially filled-in chalk quarry. It has two entries in the Geological Conservation Review database.
Amwell Quarry or Amwell Nature Reserve is a 37 hectare biological Site of Special Scientific Interest in Great Amwell in Hertfordshire. The planning authority is East Hertfordshire District Council. It is also part of the Lee Valley Ramsar Site and Special Protection Area, and is owned and managed by the Hertfordshire and Middlesex Wildlife Trust.
Roughdown Common is a 3.6-hectare (8.9-acre) biological Site of Special Scientific Interest in Hemel Hempstead in Hertfordshire. The planning authority is Dacorum Borough Council. The site is Common land, and it is owned by the Box Moor Trust having been officially bought by the trust in April 1886 from the Dean and Chapter of St Paul's. It is part of the Chilterns Area of Outstanding Natural Beauty. The Common is a steeply sloping chalk hill in south Hemel Hempstead.
Kensworth Chalk Quarry is a 131.3-hectare (324-acre) geological Site of Special Scientific Interest in Kensworth in Bedfordshire. It was notified under Section 28 of the Wildlife and Countryside Act 1981, and the local planning authority is Central Bedfordshire.
Sundon Chalk Quarry is a 26.2-hectare (65-acre) biological Site of Special Scientific Interest in Upper Sundon in Bedfordshire. It was notified in 1989 under Section 28 of the Wildlife and Countryside Act 1981, and the local planning authority is Central Bedfordshire Council. The site is privately owned but there is free public access.
Totternhoe nature reserve is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire (WTBCN). The 31-hectare (77-acre) site is in Totternhoe in Bedfordshire, and it includes parts of three Sites of Special Scientific Interest (SSSIs). Totternhoe Knolls is a biological SSSI owned by Central Bedfordshire Council and leased to the National Trust. Most of it is managed jointly by the National Trust and the WTBCN, excluding Totternhoe Castle, the earthworks of a Norman motte-and-bailey castle which is part of the SSSI but not of WTBCN's nature reserve. Totternhoe nature reserve also includes the geological SSSI, Totternhoe Stone Pit, which is not open to the public, and other areas owned by WTBCN, including part of Totternhoe Chalk Quarry, another biological SSSI.
College Lake is a 65 hectare nature reserve in a former chalk quarry in Pitstone in the Aylesbury Vale district of Buckinghamshire. It is one of the flagship reserves of the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust, and it has an information centre, education facilities, a café, toilets and a shop. It is in the Chilterns Area of Outstanding Natural Beauty. The area east of the lake is a geological Site of Special Scientific Interest called Pitstone Quarry.
Betchworth Quarry and Lime Kilns is a 27-hectare (67-acre) nature reserve north of Betchworth in Surrey. Betchworth Quarry only is managed by Surrey Wildlife Trust. It is part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest and Special Area of Conservation.
Brockham Limeworks is a 45-hectare (110-acre) nature reserve north of Brockham in Surrey. It is owned by Surrey County Council. Part of it is a Scheduled Monument, and it is part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest and Special Area of Conservation.
Chinnor Chalk Pit is a 20.4-hectare (50-acre) geological Site of Special Scientific Interest south of Chinnor in Oxfordshire. It is a Geological Conservation Review site.
