Cambridgeshire and Essex Branch of Butterfly Conservation
- Dedicated to the conservation of butterflies and moths; information about their activities, history, events, research, and listing of sightings.
- http://www.cambs-essex-butterflies.org.uk/

The Wildlife Trust for Bedfordshire, Cambridgeshire, Northamptonshire and Peterborough
- Includes news, reserves, membership and education.
- http://www.wildlifebcnp.org/

East of England Apples and Orchards Project
- Provides information and support to help preserve heritage orchard fruit varieties of the region.
- http://www.applesandorchards.org.uk

English Nature - East of England Nature Reserves
- The statutory service responsible for looking after England's variety of wild plants and animals - the country's biodiversity - and its natural features.
- http://www.english-nature.org.uk/maps/region.asp?Reg=6