My collegue was issued the penalty fare at her destination station. She had no oppurtunity to buy a ticket at her origin station, and no conductor came round on board.From the OP it is not clear whether it was given to someone who they incorrectly charged a Penalty Fare to. The OP merely says that he noticed it whilst successfully defending an issued notice. Where he noticed it, how it noticed it or why he noticed is not mentioned. From what the OP said I don't believe you could make such a definitive statement. I would suspect you may be right but the OP does not make it that clear at all.