British Trust for Conservation Volunteers
- Supporting volunteering opportunities throughout the UK and across the globe.
- http://www.btcv.org.uk/

Royal Society of Wildlife Trusts
- Charity dedicated to the protection of nature offers information about species and habitats, articles and news items, an events directory, volunteer opportunities, and details of campaigns and appeals.
- http://www.wildlifetrusts.org/

North Wales Butterflies
- Branch of the UK charity "Butterfly Conservation", helping to save local butterflies, moths and their habitats. Includes events, articles, gardening, photos.
- http://www.northwalesbutterflies.org.uk/

Whale and Dolphin Conservation Society (WDCS)
- An international charity dedicated to the worldwide conservation and welfare of whales, dolphins and porpoises (cetaceans). Includes a species guide, campaign and field project news, and opportunities for active involvement.
- http://www.wdcs.org.uk/

Marine Conservation Society
- UK charity dedicated to the protection of the marine environment and its wildlife. Includes information about marine resources and current threats.
- http://www.mcsuk.org/

Mammals Trust UK
- Charity dedicated to raising funds to help conserve all UK native species and raise funds for scientific research.
- http://www.mtuk.org/

Shark Trust
- A non-profit organisation that campaigns for shark conservation and legislation to protect sharks from overfishing. With online petitions, adoptions, information, and gallery.
- http://www.sharktrust.org/

Barn Owl Conservation Network
- A UK network of specialist voluntary advisors, working to help this threatened species by promoting a nationwide habitat creation scheme coupled with the installation of nestboxes.
- http://www.bocn.org/

UK Farming and Wildlife Advisory Group
- Provides farmers, landowners and our other clients with advice on adjusting farm operations to support wildlife, landscape, archaeology, access and other conservation issues.
- http://www.fwag.org.uk/

British Butterfly Conservation Society
- Dedicated to saving wild butterflies, moths and their habitats throughout the UK.
- http://www.butterfly-conservation.org/

Royal Society for the Protection of Birds
- Promotes conservation of birds and other wildlife through the protection and re-creation of habitats. News, history, programmes, membership, articles, nature reserves, conservation issues, and education.
- http://www.rspb.org.uk/

British Dragonfly Society
- Encouraging the study and conservation of dragonflies and their natural habitats, especially in the United Kingdom.
- http://www.dragonflysoc.org.uk/

Froglife
- Works with volunteers, ecologists, government departments and the public to conserve the native amphibians and reptiles of Britain and Ireland.
- http://www.froglife.org/

The Mammal Society
- Working to protect British mammals, halt the decline of threatened species, and advice on all issues affecting them.
- http://www.abdn.ac.uk/mammal/

The Sand Martin Trust
- Gives anyone interested in conservation a chance to help the Sand Martin, and to get further information regarding this species in Britain.
- http://www.sandmartintrust.org.uk

The Game Conservancy Trust
- UK game conservation charity. Information on game species, research, publications.
- http://www.gct.org.uk/

The British Association of Nature Conservationists - Ecos
- Comment and factual reporting on UK conservation.
- http://www.banc.org.uk/