Right, here's the new and updated plan. The station is only single platform, despite what it may look. The track above it is for longest liner trains, so the platform will have a security fence on that side. The runaround loop and headshunt can also be used as a stabling point for locos. Usually the liner trains will depart from the bottom track, but they can also depart from the track above as well. The liner trains can be loaded in the headshunt before being shunted into place by the pilot loco, which will normally be a 141 or 121 The top two sidings will normally be used by cement trains, so I have an excuse to get some lovely cement bubbles eventually