(05 Jul 2016, 9:50 pm)northern156 wrote Or, seeing as it's the same platform, they walked up to the side of the train not looking and seen the conductor as the first uniformed person they can get a reliable answer from?

At the MetroCentre, probably. Saw people trying to get on a MetroCentre terminating train the other day thinking that it was heading towards Carlisle, mind the fact it was late and the audio announcements came up for the Carlisle service probably caused the confusion there.