Animal Aid - U.K. campaigning group against all animal cruelty. Information about experiments, factory farming, captivity, humane research, and vegetarianism.

Compassion in World Farming - Investigates, and campaigns against, the suffering and cruelty to animals inherent in factory farming.

PETA UK - Information about activities and campaigns of People for the Ethical Treatment of Animals.

Scottish SPCA - Seeks to prevent cruelty to animals and promote kindness and humanity in their treatment.

Universities Federation for Animal Welfare (UFAW) - Scientific and technical animal welfare organisation.

Fight Against Animal Cruelty in Europe (FAACE) - Campaigns to stop the torture and death of animals for entertainment.

Animal Defenders - Investigates reports of animal suffering and abuse both in the U.K. and abroad including circus animal living conditions.

CritterAid - Provides a guide to animal welfare, conservation, and animal rights organisations operating in Britain and overseas.

Cruelty to Animals - Dicusses the torture of dogs and cats used as food animals in China.

Protesters Supporters's Page - Keeping visitors on to date with animal welfare issues.

Animal Rights Coalition (ARC) UK -

Royal Society for the Prevention of Cruelty to Animals (RSPCA) - Official site; includes advice on campaigning, pet care, careers, and how to help this U.K. charity.

RSPCA Tameside and Glossop Branch - Provides information on adopting animals, assisted neutering and treatment schemes, and RSPCA policies.

World Society for the Protection of Animals (WSPA) - International alliance of animal welfare organizations devoted to end animal cruelty.

World Society for the Protection of Animals Australia (WSPA), Australia and New Zealand - Organization working to raise the standards of animal welfare worldwide.