I don't think there are any breeders in the UK. They are also known as Shiloh's in the US, but they are basically oversized german shepherd dogs (some sites have a minamum height of 30" for them). To be honest, just look for a very good german shepherd dog breeder who hip scores and conducts haemophilia tests. You are only talking about a few extra inches in height with these 'king' shepherds in comparrison to the german shepherd.