I have discovered that this young stallion's name is Cody. I had a chat with his owner this morning and he lives at Hill Farm. She was telling me that he has wobbler's disease which, like the name suggests, means that he is wobbly on his feet and even falls over. Poor horse. His neck has been shaved so that the vet can inject some drugs to hopefully cure him. I do hope he's successful as he is such a lovely horse.