I don't believe Network Rail set any ticket prices. It has to be the TOC▸ .
I too didn't think Network Rail had anything to do with the pricing of rail fares unless you consider the track access charges having a contributory factor in the level of fares charged.
I may be wrong but is it not a fact that certain fares are regulated and are set by the Rail Regulator, perhaps the experts can provide a post on this thread to outline generally what fares are regulated and what fares are not.
Where two operators run between two stations one of them, the prime operator, sets fares but the second operator can undercut the prime operators fares by offering fares on XYZ services only.
A case of this was the fares between major stations in South Wales,
ATW▸ sets the fares but
FGW▸ came in with lower fares available on FGW services only. This prompted, if I recall a price war, with ATW undercutting the FGW fares by reducing the fares they (ATW) set.
Again anyone elaborate on this.
Rail fares have come alongway in my lifetime, I can remember the days when ordinary rail fares were set by rate per mile whether the journey was from Penzance to Truro, Reading to Paddington or Inverness to Invergordon. There were, I think, only Singles, Period Returns, Day Returns and Workmans / Cheap Day / Half Day Returns.
My grandfather used to work as a superintendant crane driver at the Royal Edward Docks, Avonmouth and very often he would get a pass to take me and my brother to the docks on a Sunday morning when he was on duty and he would buy a Workmans Return for himself and Child Cheap Day Returns for my brother and myself. Yes those WERE the days when the Severn Beach line was double track all the way to Hallen Marsh Junction, the line carried on to Severn Beach with a some services continuing to Pilning and Bristol via the circular route and also via Henbury from Hallen Marsh Junction to Bristol which was double track too.
Enough reminiscing.