I have been playing Midland Mainline since it came out and when I was in passenger mode, I noticed that trains that were timetabled to go to Newark Castle terminated either at Derby or Nottingham. The Passenger information screen (PIS) on the train said Nottingham when I was at Nottingham, and Derby when I was at Derby. But on the Station screens, it says Newark castle. AI portals would benefit the gameplay and it would make the likes of Nottingham and Derby Realistic, The Portals only run from Leicester which is not pleasant for the route because its only leaving for St Pancras which is a downside because its the only AI portal on the route. Derby and Nottingham on the game have 158s Terminating at either station because there isn't a portal. And it also affects the HST Sheffield service This is one thing I would love to seen been improved in the Midland Mainline improvement update coming soon.
They just terminate even though in the description, it says it will go to Newark Castle I believe for Derby and Lincoln for Nottingham