He is - he wants to get round the table for peace talks with the Islamic State lol.
This traingate thing, I think Corbyn is right on - I was on a Kings Cross-Edinburgh train last week and it was absolutely rammed, if I hadn't have booked a seat I'd have been standing all the way to York. According to his spokesman on the radio this morning he was sitting on the floor with another young couple, a guard noticed him and offered him a free upgrade to first class, which Corbyn declined because he shouldn't get upgraded ahead of the young couple. So instead the guard upgraded some people sitting in standard class to free up some room for Corbyn to sit in standard class. That would explain why he was able to get a sit later.
watch the video he walks past a dozen empty seats to sit on the floor.