
Please don't consider getting 2 puppies at the same time. No responsible breeder will allow this as it is almost impossible to train 2 puppies together. Can't help with breeders but until someone else with more knowledge of the breed comes along you could look here:
http://www.goldenretrievers.co.uk/puppy/. Make sure you only buy a puppy from parents who have had all the necessary health checks.