Before I explain why there is a problem, let me first state that I have no issue with the concept of premium fares on the Gatwick Express. My issue is with the way that DafT have (a) not realised that there was an problem when they transfered the Gatwick Express operation to Southern, and (b) tried to fix the problem but spectacularly failed, while also opening the door to further restrictions (more later).
The problem
Condition 10 of the NRCoC states:
10. Tickets valid only in trains of particular Train Companies
The validity of a ticket may:
a) be restricted to; or
b) prohibit
travel in the trains of a particular Train Company or Train Companies. Any such restriction
or prohibition will be shown on the ticket. If you travel in a train with a ticket that is not
valid, the relevant parts of Condition 2 or 4 will apply. If you are unable to use a ticket or
any part of it, you may be able to claim a refund under Condition 26 or Condition 36.
Then in Appendix A there is a list of definitions, including:
(q) Train Company means a company operating passenger railway services which
is required to apply these Conditions to its tickets under a condition of the
Passenger Licence granted to it by the Office of Rail Regulation. A list of these
companies can be found in Appendix C. Train Companies means all or more
than one of these Companies;
So, it is crystal clear that in condition 10 it is refering to a restriction on the trains of a company required to apply these conditions under a condition of it's Passenger Licence. From 5th October, Appendix C will list two lines for Southern Railway Ltd; one for Southern and one for Gatwick Express. They will both be Southern Railway Ltd which is the entity with a Passenger Licence requiring it to adhere to these conditions.
Now I know that the restriction lists Southern rather than Southern Railway Ltd, but there is a limit to the number of characters allowed on the ticket and most of the company names are too long. There is only one company which includes Southern in it's name, so it is pretty clear which entity is being used for the restriction. Well, no, of course it isn't, which is the problem all along.
The solution, and the further problem
What they need to do is to change the wording of condition 10 to specify that the restriction applies to a brand (or trading name?) as listed in Appendix C. Most of the restriction texts already relate to the customer visible branding anyway.
But, the new problem is that when adding the Gatwick Express brand to the list of companies they have also added a new Stansted Express brand alongside NXEA. Does this mean that in the future they are intending to exclude travel on the Stansted Express from certain fares? It might not be a problem if that meant that they reduce the price of said tickets, but will they? This is potentially an area to keep an eye out for changes by stealth.