I have done the usual Google search and can't really find a suitable thread to add to, so I'll open one. There's a post on the 'Disputes' thread starting 'Penalty fare issued 15 seconds...' that for some reason I can't link to, that brought this up. I just wondered that if guards showed discretion by not issuing penalty fares, or by not charging the standard fare that they should, because they realised that a passenger has genuinely made a mistake, or was in a rush and didn't have time to go to the ticket office or machine, this raises some issues: - are guards actually allowed to show discretion, or should they issue the PF or full fare in all circumstances? - if a guard does show discretion for a genuine mistake, does it give an impression to other passengers who observe it that it is, in fact, normal practice? - does commission play a part? - should there be a nationwide policy so staff and customers know where they stand? Interested in your opinions.