- Aston Rowant NNR Talking Trail http://www.naturalengland.org.uk/ourwork/conservation/designatedareas/nnr/astonrowanttalkingtrail.aspx A talking trail around this National Nature Reserve adjacent to The Ridgeway in the Chilterns
- Berks, Bucks and Oxon Wildlife Trust http://www.bbowt.org.uk/
- Herts & Middlesex Wildlife Trust http://www.hertswildlifetrust.org.uk/
- Natural England http://www.naturalengland.org.uk
- Red kites in the Chilterns http://www.redkites.net/index.html Provides information and handles enquiries about red kites in the Chilterns and other areas. Is also interested in reports on sitings of red kites outside the Chilterns core area and of dead, injured or sick kites.
- RSPB http://www.rspb.co.uk/
- The Wildlife Trusts Partnership http://www.wildlifetrust.org.uk
- Wiltshire Wildlife Trust http://www.wiltshirewildlife.org/