Also, trisher, if you believe that the team of the Leader of the UK Parliament's Opposition would not be able to book seats, and good ones, on a Virgin Train if the team jad had a bit of forethought, then you'll believe anything.
Of course "it isn't always possible" to book a train seat. But most people are not the Leader of the Opposition and his travel team.
Ergo, the sensible conclusions are that (a) he has a crap team and he's very patient about it, (b) they had a point to make about crowded trains and private company run train services so they did a stunt.