Yesterday my daughter travelled this route. She arrived at the station with a few mins to spare but the ticket office is on the other platform and you have to leave the station go along the road, re-enter, buy a ticket and then do the reverse proceedure to get your train. You have always been able to buy a ticket from the conductor on the train, and on the occasions that he does not walk through the carriage you buy one at Victoria. She decided to buy one on the train rather than risk missing it. During the journey there was an anouncement that no tickets were being sold on that train. As soon as she got to Victoria she went to the desk for Passengers travelling without tickets ( there is a special labelled desk for this purpose! ) She was questioned about why she didn't buy a ticket before she got on the train, they wouldn't let her buy a ticket but instead issued her with a Failure to Pay notice, for more than the fare she would have paid anyway. If anyone has any ideas of how to challenge this I would greatly appreciate it.