Fair enough. What about this example ?
A dozen passengers board at Grindleford heading west. The guard starts to sell tickets as soon as the train starts moving but, having sold 2 or 3, he has to return to the rear doors for the Hathersage stop. A dozen more board there, but after selling another couple of tickets the train is at Bamford where 10 more passengers board. A few more tickets are sold before everyone alights at Hope for a days walking. It is impossible to pay at Hope so upwards of 20 people leave Railway premises, apparently guilty of RoRA offences.
Should they turn themselves in to the forces of law and order for punishment

? Or is it accepted that people will be breaking the law with impunity on a regular basis - such scenes can be witnessed on morning stoppers any Sat & Sun all year round as a bit of wind and rain does not put most of these people off their walks! The only change from the above is when a guard decides not to collect any fares at all and everyone travels for free.