While I agree with almost all that is said there has been some suggestions by the northern PTEs▸ that the system of cost allocation means Northern pay much higher track access charges than further south. Something to do with the cost split with freight. I do not understand. Can someone explain?
I don't know whether Northern's track access charges are significantly higher than other TOCs▸ but if they are then it would appear they are offset by the very large Network Grant per passenger mile. Northern's Network Grant is nearly twice that of the next highest.
I think the network grant is paid to Network Rail and not to the train operating company, and the figure shown is the amount paid to Network Rail for each passenger mile over the sections of track served by each TOC; there clearly has to be some formula used to decide who's passenger miles are going to be counted over shared use lines when a table such as the one above is produced.
Cost per mile to operate and maintain a track with a frequent, long, busy service is going to be higher than a track with a few short trains,
but not higher in proportion to the passengers carried. For example, if 8 services per day from Trowbridge to Chippenham increased to 12 (extras at 05:30, 08:38, 17:21 and 21:38), passenger numbers would (educated guess) increase by around 50% , but Network Rail maintenance and operating costs only by (say) 10%, thus resulting an Network Rail grant 10% higher, but
36% lower if measured per passenger mile.
Northern Rail's operation is characterised (it seems to me ) by serving quite a number of long lines with rather infrequent service, and in some cases the traffic may be seasonal, and so they bias the company's "network rail" grant higher - it's an odd figure to look at anyway; at best an indicator as there are so many compromises as I see it. If we still had three franchises in the south west (Wessex, Thames Valley and Intercity), I suspect we would see a disparity, but probably not as stark, in these parts.