There is a clause in the franchise agreement stating that any ticket shown as valid via the CTRL in the National Routeing Guide (NRG) must be accepted. As such, whatever is on their website or peddled by their representatives is an irrelevance unless it corroborates what the NRG says.
Earlier this week, I recommended the following action to Southeastern in an attempt to prevent recurrences of what is happening to fare paying passengers with valid tickets;
Staff to be appropriately trained up on tickets. This invovles making them aware of the existence of the National Routeing Guide, the National Rail Conditions of Carriage (NRCoC) and their relevance to permitted routes. This would encompass making them aware of seemingly anomalous fares being valid and being encouraged to pass such matters on for investigation ahead of unnecessarily brutal enforcement or committing customers to debts.
This was Southeastern's response;
A part of their training relevant staff are trained to identify and authorise tickets. Due to the inherent complications involved in fares and routing we can not guarantee that a mistakes will never be made. The established appeals and escalation procedure allows for these mistakes to be rectified. However, we appreciate your advice and a copy of your email has been passed to the Head of Revenue and Security.
The NRCoC is a legal contract between the passenger and TOC. It is also Schedule 24 of the Ticketing and Settlement Agreement which is a fundamental component of their franchise agreement. Each instance of a ticket inspector making a mistake by rejecting a valid ticket represents a breach of that contract and non compliance with the terms of their franchise. If more passengers went down the road of suing them and initiating a remedial process through submitting written reports to the DfT, the management may see fit to invest in equipping its staff with the competencies required to avoid creating difficult and costly problems.
I favour a "Be right first time" approach over Southeastern's preference to make mistakes then rectify them only if challenged. This is a dangerous strategy when they have a senior member of retail staff who cannot objectively determine the validity of all tickets by using the relevant literature. Plus an appeals entity (IPFAS) with the same problem.