I just caught the 1304 from Bradford on Avon to Bristol which was running about 3 minutes late. 2 carriages, sat down straightaway halfway down first carriage and immediately saw train staff coming down the carriage he seemed to be walking past but I was geting my wallet out and managed to catch his attention and asked for a cheap day return to Oldfield Park, about 15 seconds after the train had set off from BOA. He spoke vey quietly and seemed to say somethng about a penalty fare. I had to clarify what he was saying and really took 2-3 attempts to clarify he was charging me a penalty fare. Baically he didnt dispute that I was running late and purchasing a ticket at the first opportunity. Tough. 20 quid thanks. Is it really supposed to work like this ? Whats the point of the stuff on nationalrail.co.uk saying buying on train at 1st opportunity is ok ?