Dogs trust:

Dogs Trust (formerly the National Canine Defence League) is the largest dog welfare charity in the UK. Our mission is to bring about the day when all dogs can enjoy a happy life, free from the threat of unnecessary destruction.

http://www.dogstrust.org.uk/

Cats protection League:

Cats Protection is the UKs leading cat welfare charity, rehoming and reuniting 55000 cats and kittens every year.

http://www.cats.org.uk

Cat action:

A charity which helps feral cats by visiting colonies, trapping, neutering, feeding and homing kittens. Includes fund raising information and merchandise.

http://catactiontrust.org.uk

Second chance rescue:

It is Second Chance policy to rescue any dog possibly under threat of being destroyed through no fault of it's own no matter where it is from.

http://www.secondchancerescuekennels.co.uk/