Hi, just to let you know a member on the Rail Simulator forums is making the Bishop Auckland to Darlington branch line. This route takes in several stations en-route, including Shildon, host of the Locomotion National Railway Museum - (as well as passing through the 0.75 mile long Shildon Tunnel). Although it's not the longest route in the world, I intend to make it as accurate and detailed as possible - not only the rail route itself, but also the immediate surroundings, (towns, villages, roads and countryside etc). On the site there are two Northern rail re-skin's.Full information as well as screenshot's and videos can be found Here
Train Sim Network