There aren't any Ticket Office TIS that can't sell a ticket at any time.
I have been very confused by these JP TVMs.
Simple!
No. You’d be issued a penalty fare and the issuing staff member would agree with you that it’s wholly unfair and would suggest and even encourage you to appeal.
I hope that many would just not issue the notice and sell you a ticket.
Not only are most of these JP based tricky to use, but the concept is gibberish unless they are selling you an advanced fare for a specific train. As they are not they are just lying to you, telling you they are selling you a ticket for a specific train when the validity is actually different to that. I don’t think they make a point of telling you what the real validity is - although I can’t be sure because my brain has usually imploded by the time I (and half the station behind me because of the idiotic size of the screens on some of them) have made my way through the matrix of questions.
If they are also going to lock you out of buying a ticket altogether when tickets are technically available then screw the system - I am just going to get on the train. I personally think the BTP would have a significant job on prosecuting somebody for evading a fare that a billboard sized TVM specifically told them they could not buy yet they absolutely could have bought if there was an open ticket office. The only defrauding in that situation is the railway defrauding the passenger of the opportunity to travel. The CPS would likely tell the BTP that all such fines are likely unenforceable.
If we had reservation only trains, it would be different, but we don’t. You can’t do half of one thing and half another. Gibberish.
It is also deeply ironic that the introduction of those stupid giant JP machines has coincided with a period where the J’s that you can apparently P are very often partly or largely fantasy. They would be better moving to issue permits to travel for all journeys that only crystallise into an actual full price ticket in the increasingly unlikely event the railway has managed to deposit you at your destination without slipping into delay repay territory.
If that has happened on my last 5 journeys I would have paid nothing more than the 20p for the permit to travel.