UK Valley Rail by Harcourt is always the one I go back to, even though the stations are not interactive. The industries are.
Has some nice big stations, and a long electrified section.
Also BR Midlands Fantasy, which is not as realistic, but most things are interactive.
Also Heartbeat Revisited (but don't try the "2" version, it will aim your trains off the track)
Bob P.
Oops! My mistake! I did not notice that you have Trainz 2012!! These routes were for the older 2004. Don't know if they'd work... probably not!!!