Yes i believe so. I have seen him ask for unit numbers on Northern Rail's Twitter, Facebook, Instagram, Youtube, he will pester them for unit numbers on every social media site they use. A friend of mine who works for them tells me that he is always phoning and emailing their customer service as well pestering them for unit numbers.
He really needs someone to help him sort out this obsession. His obsession with unit numbers has gone way too far. He seems to spend all his time contacting whoever he can find and trying to get unit numbers.
Perhaps he needs to get out a bit more and go to railway stations to do some spotting sometimes rather than asking everyone online for unit numbers. I agree he needs some new hobbies as well.