http://www.peta.org.uk/
PETA in the US came into existence in 1980 in the United States and
have more than 1,100,000 members and supporters, making it the largest
animal rights organisation in the world.

PETA and PETA Europe are dedicated to establishing and protecting the
rights of all animals. Like us, animals are capable of suffering and
have interests in leading their own lives; therefore, they are not
ours to use – for food, clothing, entertainment, experimentation or
for any other reason. PETA affiliates throughout the world educate
policymakers and the public about cruelty to animals and promote an
understanding of the right of all animals to be treated with respect.

PETA and PETA Europe work through public education, research,
legislation, special events, celebrity involvement and protest
campaigns.