There never was a true discussion, most down south just pay as (relatively) few travel enough in the north to notice the lower prices.
You might like to look at the latest Government study of overcrowding Here, table 1 clearly how the difference between peak and off peak demand is much greater for London than all other major cities. This is the reason why infrastructure and investment is so geared to peak flows result in that it goven to London travellers and cynically denied to others, - more a commercial decision to maximise revenue that is needed for the peak flows.
That probably helps to explain why some London flows in the area might be more expensive per mile than some of the more local routes in the North.
This, and the fact that wages are generally lower in the North, mean that its no excuse to deny Northern passengers railcards, groupsave discounts etc
Last edited: