Comment by BoxOfRain

I think it depends on the train journey personally. I'd never dream of striking up a conversation on the Tube or a busy commuter line; personally I'm the definition of 'not a morning person' so I've no social battery to spare in those circumstances. On the other hand I quite like a chat when I'm not in a hurry or it's not the morning, makes the time go faster.

Mind you most of the talk seems to be along the lines of 'GWR couldn't organise a piss-up in a brewery' these days.