National organisations
- Bat Conservation Trust
- Bees, Wasps and Ants Recording Society
- Botanical Society of the British Isles
- British Entomological and Natural History Society
- British Trust for Ornithology
- Butterfly Conservation
- Defra Department for Environment, Food and Rural Affairs
- Field Studies Council
- Hoverfly Recording Scheme
- Mammal Society
- National Biodiversity Network
- National Federation of Badger Groups
- National Federation for Biological Recording
- Natural England
- Pond Conservation
- Royal Entomological Society
- Royal Society for the Protection of Birds
- National Trust (nature pages)
- UK Ladybird Society
- UK Phenology Network
- Wildfowl & Wetlands Trust
- Wildlife Trusts Partnership
- Woodland Trust