Ewelme is a village and civil parish in the Chiltern Hills in South Oxfordshire, 2.5 miles (4 km) north-east of the market town of Wallingford. The 2011 Census recorded the parish's population as 1,048. To the east of the village is Cow Common and to the west, Benson Airfield, the north-eastern corner of which is within the parish boundary. The solid geology is chalk overlying gault clay. The drift geology includes some gravel.
Fowlmere is a Royal Society for the Protection of Birds nature reserve between Fowlmere and Melbourn in Cambridgeshire. It is designated a 39.9-hectare (99-acre) biological Site of Special Scientific Interest called Fowlmere Watercress Beds.
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.
Aston Rowant National Nature Reserve is located on the north-west escarpment of the Chiltern Hills, in the Chilterns Area of Outstanding Natural Beauty. It has an area of 159.1 hectares, and most of it is a 128.5 hectares biological Site of Special Scientific Interest. It is listed as a Grade 1 site in A Nature Conservation Review. The reserve is in several sections, mostly in the parish of Lewknor in Oxfordshire, with smaller sections in the parish of Stokenchurch in Buckinghamshire.
Spencer Road Wetlands is a one hectare Local Nature Reserve in Mitcham in the London Borough of Sutton. It is owned by Sutton Council and managed by the London Wildlife Trust.
Chorleywood Common is a 75.6 hectare Local Nature Reserve in Chorleywood in Hertfordshire. It is owned and managed by Chorleywood Parish Council, and the declaring authority is Hertfordshire County Council. The common is part of the Chilterns Area of Outstanding Natural Beauty.
Oughtonhead Common is a 17.4 hectare Local Nature Reserve in the Westmill district of Hitchin, Hertfordshire. It is owned and managed by North Hertfordshire District Council.
Shrubhill Common is a 9.8 hectare Local Nature Reserve in Hemel Hempstead in Hertfordshire. It is owned and managed by Dacorum Borough Council. The site is common land, and it is part of the Chilterns Area of Outstanding Natural Beauty.
Watercress Wildlife Site is a 1.2-hectare (3.0-acre) Local Nature Reserve in St Albans, Hertfordshire, England. It is owned by St Albans City Council and managed by the Watercress Wildlife Association, a registered charity. The boundaries of the site are the Alban Way, the River Ver and the houses of Riverside Road.
Lemsford Springs is a 4 hectare nature reserve in Lemsford, Hertfordshire, England. It is managed by the Herts and Middlesex Wildlife Trust, which purchased the site in 1970. Notable for its lagoons, the site is in the Lea valley and its other habitats are meadow, hedgerows, marsh and willow woodland.
Brush Hill is a 14.7 hectares Local Nature Reserve east of Princes Risborough in Buckinghamshire. It has been managed since 2013 by the Chiltern Society, and it is part of the Chilterns Area of Outstanding Natural Beauty.
Captain's Wood is a 13.9 hectares Local Nature Reserve near Chesham in Buckinghamshire. It is owned by Buckinghamshire County Council and the Chiltern Society took over management of the site from the Council in 2014. It is part of the Chilterns Area of Outstanding Natural Beauty.
Whiteleaf Hill is an 11 hectares Local Nature Reserve near Princes Risborough in Buckinghamshire. It is owned by Buckinghamshire County Council and managed by the Chiltern Society. it is in the Chilterns Area of Outstanding Natural Beauty, and it has five scheduled ancient monuments, including some dating to the Neolithic and Bronze Ages, and the Whiteleaf Cross, a chalk carving thought to date to the eighteenth century.
Prestwood Local Nature Reserve or Prestwood (Picnic Site) is a 2.1 hectares (5.2 acres) Local Nature Reserve in Prestwood in Buckinghamshire. It is in the Chilterns Area of Outstanding Natural Beauty. The site is owned by Wycombe District Council and leased to the Chiltern Society.
Anton Lakes is a 33.1-hectare (82-acre) Local Nature Reserve in Andover in Hampshire. It is owned by Test Valley Borough Council and managed by the council together with The Anton River Conservation Association.
